Prince Charles, Camilla set for packed last day in DC

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Charles And Camilla Visit U.S. For First Time in 10 Years

WASHINGTON (AP) -- Prince Charles and his wife will finish up their visit to Washington, D.C. with a whirlwind day that will include meeting with President Barack Obama.

The royal couple will begin Thursday by visiting an armed forces retirement home. Prince Charles will then visit a charter school for adult immigrants, while his wife Camilla tours a forensic sciences center.

The couple then will meet with Obama and Vice President Joe Biden at the White House before a number of other events.

The Prince of Wales and the Duchess of Cornwall arrived in Washington on Tuesday and have visited cultural and educational sites including the Lincoln and Martin Luther King Jr. memorials, Mount Vernon, the National Archives and the Shakespeare Theatre Company.

It's Prince Charles' 20th visit to the U.S.

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Prince Charles, Camilla in United States, White House 2015
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Prince Charles, Camilla set for packed last day in DC
President Barack Obama meets with Britain's Prince Charles, Thursday, March 19, 2015, in the Oval Office of the White House in Washington. (AP Photo/Jacquelyn Martin)
President Barack Obama meets with Britain's Prince Charles, and his wife Camilla, the Duchess of Cornwall, Thursday, March 19, 2015, in the Oval Office of the White House in Washington. (AP Photo/Jacquelyn Martin)
Britain's Prince Charles and his wife, Camilla, the Duchess of Cornwall, are directed to the West Wing doors of the White House in Washington, Thursday, March 19, 2015, as they arrive for their meeting with President Barack Obama. (AP Photo/Susan Walsh)
Britain's Prince Charles and his wife Camilla, the Duchess of Cornwall arrive at the West Wing of the White House in Washington, Thursday, March 19, 2015, for their meeting with President Barack Obama in the Oval Office. (AP Photo/Susan Walsh)
President Barack Obama and Vice President Joe Biden meets with Britain's Prince Charles, Thursday, March 19, 2015, in the Oval Office of the White House in Washington. (AP Photo/Jacquelyn Martin)
US President Barack Obama (L) watches as US Vice President Joe Biden reacts to microphone booms before a meeting with Britain's Prince Charles and his wife Camilla, Duchess of Cornwall, in the Oval Office of the White House March 19, 2015 in Washington, DC. AFP PHOTO/BRENDAN SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
WASHINGTON, DC - MARCH 19: Charles, Prince of Wales sits as he attends a meeting with United States President Barack Obama (not pictured) in the Oval Office of the White House on March 19, 2015 in Washington, D.C. The Prince and Duchess are in Washington as part of a Four day visit to the United States. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 19: President of the United States of America Barack Obama speaks with Prince Charles, Prince of Wales (not pictured) in the Oval Office on the third day of a visit to the United States on March 19, 2015 in Washington, DC. The Prince and Duchess are in Washington as part of a Four day visit to the United States. (Photo by Chris Jackson/Getty Images)
US President Barack Obama (R) and Britain's Prince Charles talk before a meeting in the Oval Office of the White House on March 19, 2015 in Washington, DC. AFP PHOTO/BRENDAN SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Britain’s Prince Charles greets guests at a reception for him and his wife Camilla, the Duchess of Cornwall at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
JINJA, UGANDA - NOVEMBER 24: HRH Camilla, Duchess of Cornwall and Prince Charles, Prince of Wales pose for a photograph at the source of the White Nile on November 24, 2007 in Jinja, Uganda. The Prince and Duchess are in Uganda during the Commonwealth Heads of Govenment Meeting. (Photo by Chris Jackson/Getty Images)
Camilla, the Duchess of Cornwall speaks with guests at a reception for her and Britain’s Prince Charles at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
CIRENCESTER, ENGLAND - JUNE 26: (L-R) HRH Prince Charles, John Smail, HRH Prince William and HM the Sultan of Brunei pose during the presentations in The Dorchester Polo Trophy match at Cirencester Park Polo Club, on June 26, 2004 in Gloucestershire, England. (Photo by Jo Caird/Getty Images)
British Ambassador to the United States Sir Peter Westmacott, left, accompanies Britain’s Prince Charles, right, to a reception as he and his wife Camilla, the Duchess of Cornwall arrive at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
403058 : Prince Charles and his sons William (R) and Harry (L) appear at a photocall March 29, 2002 in the Swiss village of Klosters at the start of his annual sking holiday in the Swiss Alps. (Photo by Julian Herbert/Getty Images)
Princess Diana (L), Prince Harry, (2nd L) Prince William (2nd R) and Prince Charles (R) gather for the commemorations of VJ Day, 19 August 1995 in London. Prince William turned 25 Thursday 21 June 2007, and in doing so became entitled to part of the multi-million pound (euro, dollar) inheritance left to him by his late mother, princess Diana. The second in line to the throne is now allowed access to the income accrued on the 6,5 million pounds he was left in his mother's will after she died 10 years ago in a car crash in Paris. AFP PHOTO/JOHNNY EGGITT/ (Photo credit should read JOHNNY EGGITT/AFP/Getty Images)
Britain’s Prince Charles and Camilla, the Duchess of Cornwall arrive at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
British Ambassador to the United States Sir Peter Westmacott, top left, and his wife Lady Westmacott, bottom left, accompany Britain’s Prince Charles and Camilla, the Duchess of Cornwall to a reception as they arrive at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
Britain's Prince Charles and Camilla, the Duchess of Cornwall arrive for a reception at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
British Ambassador to the United States Sir Peter Westmacott, left, and his wife Lady Westmacott, center, speak with Britain’s Prince Charles, right, as he greets guests at a reception for him and his wife Camilla, the Duchess of Cornwall at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
British Ambassador to the United States Sir Peter Westmacott, center, accompanies Britain’s Prince Charles, right, to a reception as he and his wife Camilla, the Duchess of Cornwall arrive at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
Britain’s Prince Charles, second from left, and Camilla, the Duchess of Cornwall, left, arrive after being greeted by British Ambassador to the United States Sir Peter Westmacott, right, at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
British Ambassador to the United States Sir Peter Westmacott, left, accompanies Britain’s Prince Charles, right, to a reception as he and his wife Camilla, the Duchess of Cornwall arrive at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
British Ambassador to the United States Sir Peter Westmacott, left, greets Camilla, the Duchess of Cornwall, right, as she arrives with Britain’s Prince Charles, top right, for a reception at the British Ambassador's residence on Tuesday, March 17, 2015 in Washington. The royal couple will visit cultural and educational sites in the Washington region over the next three days. (AP Photo/Andrew Harnik)
WINDSOR, ENGLAND - APRIL 09: TRH Prince Charles and his wife The Duchess Of Cornwall, Camilla Parker Bowles meet the crowd following the Service of Prayer and Dedication after their marriage at The Guildhall, at Windsor Castle on April 9, 2005 in Berkshire, England. (Photo by Dave Hogan/Getty Images)
Britain's Prince Charles, right, and the Duchess of Cornwall, are greeted by U.S. Deputy Chief of Protocol Mark Walsh, left, as they arrive at Andrews Air Force Base, Tuesday, March 17, 2015, in Andrews Air Force Base, Md. The couple is scheduled to visit cultural and educational sites over the next three days. (AP Photo/ Evan Vucci)
Britain's Prince Charles, Prince of Wales, and his wife Camilla, Duchess of Cornwall, arrive at Andrews Air Force Base in Maryland on March 17, 2015 for a four-day visit to the US. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
WASHINGTON, DC - MARCH 18: Camilla, Duchess of Cornwall and Prince Charles, Prince of Wales visit the Lincoln Memorial on the second day of a visit to the United States on March 18, 2015 in Washington, DC. The Prince and Duchess are in Washington as part of a Four day visit to the United States. (Photo by Chris Jackson/Getty Images)
WASHINGTON, DC - MARCH 17: Prince Charles, Prince of Wales meets staff durng a visit to the British embassy on March 17, 2015 in Washington, DC. (Photo by: Arthur Edwards - Pool/Getty Images)
LONDON, ENGLAND - MARCH 13: Prince Charles, Prince of Wales speaks with armed forces personnel during a reception at Guildhall, after the Afghanistan service of commemoration at St Paul's Cathedral on March 13, 2015 in London, England. (Photo by Toby Melville - WPA Pool / Getty Images)
LONDON, United Kingdom: FILES - Picture taken 14 November 2002 shows Britain's Prince Charles (R) and his companion Camilla Parker-Bowles leaving the Ritz hotel where a private party was held to celebrate the succes of her jubilee in central London. Prince Charles and Camilla Parker-Bowles will marry in Scotland in the coming autumn, a German royal expert and author said 18 May 2004. AFP PHOTO NICOLAS ASFOURI (Photo credit should read NICOLAS ASFOURI/AFP/Getty Images)
Prince William (R) and his father Prince Charles, the Prince of Wales, pose during a photocall at Highgrove in Gloucestershire 29 September 2000. The media were invited to the photocall, at the Prince of Wales's residence, to mark the next part of Prince Wiliam's gap year before he starts university next Autumn. It was also a thank you to the media who have respected Prince William's privacy while he attended Eton college. (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
LONDON, UNITED KINGDOM - JULY 19: Britain's Queen Elizabeth, the Queen Mother, arrives 19 July 2000, with her grandson, the Prince of Wales, Prince Charles (L), for a pageant on London's Horse Guards Parade to mark her 100th birthday, which is on August 4. Some 1,000 people, animals and aircraft are taking part reflecting all parts of Britain's national life. AFP PHOTO FIONA HANSON (Photo credit should read FIONA HANSON/AFP/Getty Images)
The Prince of Wales (L) meets pop star Victoria Beckham (R) and her husband David (C) at the Princes Trust Capital FM Party in the Park 2000, London late 09 July 2000. Victoria made her solo debut at the huge outdoor charity show 09 July in front of 100,000 music fans. She is the last of the Spice Girls to branch out with her own pop career as she joined dance act Truesteppers. (Photo credit should read MATTHEW FEARN/AFP/Getty Images)
Charles, Prince of Wales, kisses the hand of his bride, Lady Diana, on the balcony of Buckingham Palace when they appeared before a huge crowd, on July 29, 1981, after their wedding in St Paul's Cathedral. AFP PHOTO (Photo credit should read ARCHIVE/AFP/Getty Images)
Britain's Princess Diana (C) and Prince Charles (R) stand in silence before the monument of the Unknown Soldier at the National Cemetery 02 November, 1992. The couple went directly to the cemetery after arriving for their four-day visit. (Photo credit should read CHOO YOUN-KONG/AFP/Getty Images)
SANDRINGHAM, ENGLAND - JULY 31: Prince Charles and Camilla Parker Bowles arrive together to attend the Sandringham Flower Show on the Royal Sandringham Estate July 31, 2002 in Norfolk, England. Camilla's arrival with Charles, suggests an effort on the part of the British Royal Family to introduce her to more public Royal duties due to her relationship with the Prince. (Photo by Sion Touhig/Getty Images)
Britain's Prince Charles and the Duchess of Cornwall, arrive at Andrews Air Force Base, on Tuesday, March 17, 2015, in Andrews Air Force Base, Md. The couple is scheduled to visit cultural and educational sites over the next three days. (AP Photo/ Evan Vucci)
GLOUCESTERSHIRE, ENGLAND - JULY 27: Britain's Prince Charles attends a polo match at the Beaufort Polo Club for The Ronnie Wallace Memorial Trophy in aid of The Hunt Servants' Benefit Society July 27, 2002 in Glocestershire, England. (Photo by John Li / Getty Images)
LONDON, UNITED KINGDOM: Britain's Prince Charles (R) and Camilla Parker Bowles (L) leavee the Ritz Hotel after a private party to celebrate the succes of Britain's Queen Elizabeth II jubilee in central London 14 november 2002. (Photo credit should read NICOLAS ASFOURI/AFP/Getty Images)
NORFOLK,ENGLAND - JULY 23: Camilla Parker Bowles meets fans at the Sandringham Flower Show July 23, 2003 at Sandringham in Norfolk, England. (Photo By Steve Finn/Getty Images)
American recording artist Beyonce Knowles meets Prince Charles, The Prince of Wales during the reception for the 'Fashion Rocks' concert and fashion show in aid of The Prince's Trust at the Royal Albert Hall in London, England, October 15, 2003. (Photo by Jim Watson/AFP/Getty Images)
American recording artist Beyonce Knowles greets Prince Charles, HRH The Prince of Wales, during the reception for the 'Fashion Rocks' concert and fashion show, in aid of The Prince's Trust at the Royal Albert Hall in London, England, October 15, 2003. (Photo by Jim Watson/AFP/Getty Images)
LONDON - JULY 20: (NO UK SALES FOR 28 DAYS) Camilla Parker-Bowles enjoys the speech by the Prince of Wales to London black taxi drivers, during a garden reception in the grounds of Clarence House, on July 20, 2004 in London. (Photo by ROTA/Getty Images)
LONDON, UNITED KINGDOM: Charles Prince of Wales laughs with British actress Barabara Windsor (R) and British TV host Kelly Osbourne (2ndR) next to Sharon Osbourne at the London Coliseum, in central London, late 14 December 2004. The Prince of Wales was attending the BBC's Royal Variety Performance, which raises money for the 'Artists Benevolent Fund'. AFP PHOTO/CHRIS YOUNG/POOL (Photo credit should read CHRIS YOUNG/AFP/Getty Images)
LONDON, UNITED KINGDOM: The Prince of Wales and Camilla Parker Bowles arrive for a charity concert, 11 November 2004 to celebrate the career of music producer Trevor Horn. Charles's partner joined him as he attended the official engagement, titled Produced By Trevor Horn, a concert for the Prince's Trust at London's Wembley Arena. AFP PHOTO/ANDREW PARSONS/WPA POOL (Photo credit should read ANDREW PARSONS/AFP/Getty Images)
WINDSOR, UNITED KINGDOM: Prince Charles and Camilla Parker Bowles arrive for a party at Windsor Castle after announcing their engagement earlier 10 February, 2005. Britain's Prince Charles and his longtime companion Camilla Parker Bowles are to marry, his office announced Thursday, putting the official seal on a relationship that first blossomed 35 years ago. AFP PHOTO/JOHN STILLWELL/WPA POOL (Photo credit should read JOHN STILLWELL/AFP/Getty Images)
WINDSOR, UNITED KINGDOM: Camilla Parker Bowles shows off her engagement ring as she and Prince Charles arrive for a party at Windsor Castle after announcing their engagement earlier 10 February, 2005. Britain's Prince Charles and his longtime companion Camilla Parker Bowles are to marry, his office announced Thursday, putting the official seal on a relationship that first blossomed 35 years ago. AFP PHOTO/JOHN STILLWELL/WPA POOL (Photo credit should read JOHN STILLWELL/AFP/Getty Images)
GLOUCESTERSHIRE, ENGLAND - MARCH 13: HRH Prince Charles (L) and fiancee Camilla Parker Bowles leave church accompanied by the Rev. Christopher Mulholland, following the Sunday service at St Lawrence Church on March 13, 2005 in Gloucestershire, England. (Photo by Getty Images)
The Prince of Wales, and his new wife, Camilla Parker Bowles, the Duchess of Cornwall (Photo by Anwar Hussein Collection/ROTA/WireImage)
Prince Charles and Camilla Parker-Bowles, Duchess of Cornwall and guests (Photo by Anwar Hussein Collection/ROTA/WireImage)
HRH Prince Charles and Camilla Parker Bowles during The Royal Wedding of HRH Prince Charles and Mrs. Camilla Parker Bowles - Outside at Guildhall in Windsor, Great Britain. (Photo by Anwar Hussein/WireImage)
WINDSOR, ENGLAND - APRIL 09: HRH Prince Charles & The Duchess of Cornwall, Camilla Parker Bowles depart the Civil Ceremony where they were legally married, at The Guildhall, Windsor on April 9, 2005 in Berkshire, England. (Photo by Georges De Keerle/Getty Images)
Prince Charles and Camilla Parker-Bowles, Duchess of Cornwall (Photo by Anwar Hussein Collection/ROTA/WireImage)
The Wedding Of Hrh The Prince Of Wales & Mrs Camilla Parker Bowles At The Guildhall, Windsor. . (Photo by Mark Cuthbert/UK Press via Getty Images)
Prince William (R) and his brother Prince Harry (L) look on as their father Prince Charles and new wife, the Duchess of Cornwall, formerly Camilla Parker Bowles, drive away from The Guildhall in Windsor where they were married in a private ceremony 09 April 2005. Prince Charles and his longtime sweetheart Camilla Parker Bowles married today after two months of muddled preparations and a lifetime of waiting. AFP PHOTO/ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - APRIL 09: TRH Prince Charles & The Duchess of Cornwall, Camilla Parker Bowles depart the Civil Ceremony where they were legally married, at The Guildhall, Windsor on April 9, 2005 in Berkshire, England. (Photo by Georges De Keerle/Getty Images)
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Prince Charles, Camilla set for packed last day in DC
Britain's Prince William and Britain's Kate, Duchess of Cambridge smile as they as they leave the Stephen Lawrence Centre following a tour of the facility where they met staff in Deptford, London, Friday, March 27, 2015. The Duchess is expecting her second child in April. (AP Photo/Tim Ireland)
LONDON, ENGLAND - MARCH 27: Prince William, Duke of Cambridge visits XLP at Christ Church, Gipsy Hill on March 27, 2015 in London, England. (Photo by Samir Hussein/WireImage)
Kate, Duchess of Cambridge, and Britain's Prince William, do a virtual signing of the South Tower Column, during their visit to the National September 11 Museum, Tuesday, Dec. 9, 2014. (AP Photo/Richard Drew, Pool)
Kate, second from right, Duchess of Cambridge, and Britain's Prince William, third from right, with Joe Daniels, right, President & CEO of the National September 11 Memorial & Museum, view the remains of Fire Dept. of New York Ladder 3, during their visit to the National September 11 Museum, Tuesday, Dec. 9, 2014. (AP Photo/Richard Drew, Pool)
Kate, Duchess of Cambridge, and Britain's Prince William view the art installation of Spencer Finch during their visit to the National September 11 Museum, Tuesday, Dec. 9, 2014. (AP Photo/Richard Drew, Pool)
Kate, Duchess of Cambridge, and Britain's Prince William, with Joe Daniels, Joe Daniels , left, President & CEO of the National September 11 Memorial & Museum view the remains of the former broadcast tower from the World Trade Center, during their visit to the National September 11 Museum, Tuesday, Dec. 9, 2014. (AP Photo/Richard Drew, Pool)
Kate, second from right, Duchess of Cambridge, and Britain's Prince William, third from right, view tridents during their visit to the National September 11 Museum, as museum President & CEO Joe Daniels, right, conducts the tour, Tuesday, Dec. 9, 2014. (AP Photo/Richard Drew, Pool)
Kate, Duchess of Cambridge, and Britain's Prince William are escorted by Joe Daniels, President & CEO of the National September 11 Memorial & Museum in the Hall of Faces, during their visit to the National September 11 Museum, Tuesday, Dec. 9, 2014. (AP Photo/Richard Drew, Pool)
NEW YORK, NY - DECEMBER 09: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the National September 11 Memorial Museum on December 9, 2014 in New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge take a tour of the lobby of One World Trade Center after a visit the National September 11 Memorial & Museum on December 09, 2014 in New York City. The couple, who are traveling without their son Prince George, are on a three-day US east coast visit. This is the Duke and Duchess' first official visit to New York City. ( Photo by Shannon Stapleton - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during a visit the National September 11 Memorial & Museum on December 09, 2014 in New York City. The couple, who are traveling without their son Prince George, are on a three-day US east coast visit. This is the Duke and Duchess' first official visit to New York City. (Photo by Doug Mills - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge lay flowers in memory of the victims of the September 11 terrorist attacks during a visit the National September 11 Memorial & Museum on December 09, 2014 in New York City. The couple, who are traveling without their son Prince George, are on a three-day US east coast visit. This is the Duke and Duchess' first official visit to New York City. ( Photo By Robert Sabo - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge eats some sweets as Catherine, Duchess of Cambridge looks on during a visit to The Door/City Kids Foundation on December 9, 2014 in New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 09: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge take part in an art class as they visit The Door/City Kids Foundation on December 9, 2014 in New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 09: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge watch an art performance as they visit The Door/City Kids Foundation on December 9, 2014 in New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 9: Catherine, the Duchess of Cambridge, (2nd R) watches a performance during a visit to The Door December 9, 2014. The Door is a more than 40-year-old program that serves disadvantaged youth in New York City. (Photo by Chad Rachman-Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the National September 11 Memorial Museum on December 9, 2014 in New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge, (L) and Catherine, Duchess of Cambridge, (C) lay a wreath at one of the reflecting pools at the National September 11 Memorial and Museum on December 9, 2014 in New York City. The couple, who are traveling without their 16-month-old son Prince George, are on a three-day US east coast visit. This is the Duke and Duchess's first visit to New York City, and the Duke's first trip to the nation's capital where he met with U.S. President Barack Obama. (Photo by Spencer Platt/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and New York Mayor Bill de Blasio attend the Innovation is GREAT Reception at Shutterstock headquarters in the Empire State Building on December 9, 2014 in New York City. The reception was technology themed and the winners of the GREAT Tech Awards were presented with trophies. (Photo by Jonathan Brady - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the St. Andrews 600th Anniversary Dinner at Metropolitan Museum of Art on December 9, 2014 in New York City. The event is created to support scholarships and bursaries for students from under-privileged communities and investment in the university's media and science faculties, sports centers and lectureship in American literature. (Photo by Richard Perry - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave St. Andrews 600th Anniversary Dinner at Metropolitan Museum of Art on December 9, 2014 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave St. Andrews 600th Anniversary Dinner at Metropolitan Museum of Art on December 9, 2014 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - DECEMBER 09: Kate Middleton, The Duchess of Cambridge and Prince William are seen on December 9, 2014 in New York City. (Photo by GWR/Star Max/GC Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge presents Jessica Brondo Davidoff of Admittedly with the Education UK Trade and Industry award during the Innovation is GREAT Reception at Shutterstock headquarters in the Empire State Building on December 9, 2014 in New York City. The reception was technology themed and the winners of the GREAT Tech Awards were presented with trophies. (Photo by Jonathan Brady - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive at Metropolitan Museum of Art to attend the St. Andrews 600th Anniversary Dinner December 9, 2014 in New York City. The event is created to support scholarships and bursaries for students from under-privileged communities and investment in the university's media and science faculties, sports centers and lectureship in American literature. (Photo by Geoff Pugh - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive at Metropolitan Museum of Art to attend the St. Andrews 600th Anniversary Dinner December 9, 2014 in New York City. The event is created to support scholarships and bursaries for students from under-privileged communities and investment in the university's media and science faculties, sports centers and lectureship in American literature. (Photo by Chad Rachman - Pool/Getty Images)
NEW YORK, NY - DECEMBER 09: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave St. Andrews 600th Anniversary Dinner at Metropolitan Museum of Art on December 9, 2014 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet recording artists Jay-Z and Beyonce as CEO, Brooklyn Nets and Barclays Center Brett Yormark looks on during the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet recording artists Jay-Z and Beyonce as CEO, Brooklyn Nets and Barclays Center Brett Yormark looks on during the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet recording artist Jay-Z as CEO, Brooklyn Nets and Barclays Center Brett Yormark looks on during the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet recording artist Jay-Z as CEO, Brooklyn Nets and Barclays Center Brett Yormark looks on during the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet recording artist Jay Z as CEO, Brooklyn Nets and Barclays Center Brett Yormark looks on during the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
Britain's Prince William, second from right, talks with rapper and entrepreneur Jay-Z , far right, as Kate, left, the Duchess of Cambridge, chats with Jay Z's wife, entertainer Beyonce, foreground center, during an NBA basketball game between the Cleveland Cavaliers and the Brooklyn Nets at the Barclays Center in New York, Monday, Dec. 8, 2014. (AP Photo/Kathy Willens)
Kate, left, the Duchess of Cambridge, and Britain's Prince William, are displayed on a giant video screen as they attend an NBA basketball game between the Cleveland Cavaliers and the Brooklyn Nets at the Barclays Center in New York, Monday, Dec. 8, 2014. (AP Photo/Kathy Willens)
Britain's Prince William, right, and Kate, Duchess of Cambridge, watch the second half of an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers, Monday, Dec. 8, 2014, in New York. (AP Photo/Frank Franklin II)
Jay-Z and Beyonce, right, walk back to their seats after meeting Britain's Prince William, and Kate, Duchess of Cambridge, during the second half of an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers, Monday, Dec. 8, 2014, in New York. (AP Photo/Frank Franklin II)
Jay-Z and Beyonce, right, walk back to their seats after meeting Britain's Prince William and Kate, Duchess of Cambridge, during the second half of an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers, Monday, Dec. 8, 2014, in New York. (AP Photo/Frank Franklin II)
Kate, left, Duchess of Cambridge, watches as Britain's Prince William, right, talks to Jay-Z during the second half of an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers, Monday, Dec. 8, 2014, in New York. (AP Photo/Frank Franklin II)
Britain's Prince William, left, talks with Jay-Z during the second half of an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers, Monday, Dec. 8, 2014, in New York. (AP Photo/Frank Franklin II)
Britain's Prince William, left, talks with Jay-Z during the second half of an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers, Monday, Dec. 8, 2014, in New York. (AP Photo/Frank Franklin II)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge pose with basketball player LeBron James (R) backstage as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by Tim Rooke - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge pose with basketball player LeBron James (R) backstage as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by Tim Rooke - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge pose with basketball player LeBron James (R) backstage as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by Tim Rooke - Pool/Getty Images)
Former Houston Rockets player Dikembe Mutombo, fourth from left, talks to Kate, the Duchess of Cambridge, who sits beside him and Britain's Prince William, during an NBA basketball game between the Cleveland Cavaliers and the Brooklyn Nets at the Barclays Center in New York, Monday, Dec. 8, 2014. (AP Photo/Kathy Willens)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge pose with basketball player LeBron James (R) backstage as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by Tim Rooke - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge (C) and Catherine, Duchess of Cambridge (2nd L) pose with NBA Commissioner Adam Silver (2nd R), Global Ambassador Dikembe Mutombo (L) and Sr. Vice President, Community & Player Programs Kathleen Behrens (R) as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by Neilson Barnard-POOL/Getty Images)
NEW YORK, NY - DECEMBER 08: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet LeBron James (R) as they attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 08: (L-R) Prince William, Duke of Cambridge and Global Ambassador Dikembe Mutombo attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Global Ambassador Dikembe Mutombo (L), Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Cleveland Cavaliers vs. Brooklyn Nets game at Barclays Center on December 8, 2014 in the Brooklyn borough of New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 08: Demonstrators march outside the Barclays Center during a Brooklyn Nets game to protest a Staten Island, New York grand jury's decision not to indict a police officer involved in the chokehold death of Eric Garner in July on December 8, 2014 in New York City. The royal couple, Prince William and Catherine, Duchess of Cambridge, are on an official three-day visit to New York and were in attendence for the Brooklyn Nets game. (Photo by Andrew Burton/Getty Images)
NEW YORK, NY - DECEMBER 08: Demonstrators march outside the Barclays Center during a Brooklyn Nets game to protest a Staten Island, New York grand jury's decision not to indict a police officer involved in the chokehold death of Eric Garner in July on December 8, 2014 in New York City. The royal couple, Prince William and Catherine, Duchess of Cambridge, are on an official three-day visit to New York and were in attendence for the Brooklyn Nets game. (Photo by Andrew Burton/Getty Images)
NEW YORK, NY - DECEMBER 08: Demonstrators stage a die-in outside the Barclays Center during a Brooklyn Nets game to protest a Staten Island, New York grand jury's decision not to indict a police officer involved in the chokehold death of Eric Garner in July on December 8, 2014 in New York City. The royal couple, Prince William and Catherine, Duchess of Cambridge, are on an official three-day visit to New York and were in attendence for the Brooklyn Nets game. (Photo by Andrew Burton/Getty Images))
NEW YORK, NY - DECEMBER 08: Demonstrators stage a die-in outside the Barclays Center during a Brooklyn Nets game to protest a Staten Island, New York grand jury's decision not to indict a police officer involved in the chokehold death of Eric Garner in July on December 8, 2014 in New York City. The royal couple, Prince William and Catherine, Duchess of Cambridge, are on an official three-day visit to New York and were in attendence for the Brooklyn Nets game. (Photo by Andrew Burton/Getty Images)
NEW YORK, NY - DECEMBER 08: Chelsea Clinton gives a speech in front of former United States Secretary of State, Hillary Clinton, Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and guests during a conservation reception at British Consul General's Residence on December 8, 2014 in New York City. (Photo by Samir Hussein/WireImage)
NEW YORK, NY - DECEMBER 08: Former United States Secretary of State, Hillary Clinton gives a speech in front of Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and guests during a conservation reception at British Consul General's Residence on December 8, 2014 in New York City. (Photo by Samir Hussein/WireImage)
NEW YORK, NY - DECEMBER 08: (L-R) Hillary Rodham Clinton, Chelsea Clinton, Marc Mezvinsky, Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a reception co-hosted by the Royal Foundation and the Clinton Foundation at British Consul General's Residence on December 8, 2014 in New York City. (Photo by Eduardo Munoz Alvarez - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge, greets children during a visit with Chirlane McCray, the first lady of New York, to the Northside Center for Child Development on December 8, 2014 in New York City. The royal couple are on an official three-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C today. (Photo by Mark Stewart - Pool/Getty Images)
US President Barack Obama meets with Britain's Prince William, Duke of Cambridge, in the Oval Office at the White House in Washington on December 8, 2014. William and his wife Catherine are on a three-day visit to the US. AFP PHOTO/ NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge greets guests at Northside Center for Child Development during her official two-day visit to the United States on December 8, 2014 in New York City. (Photo by Neilson Barnard/Getty Images)
WASHINGTON, DC - DECEMBER 08: U.S. President Barack Obama (R) meets with Prince William (L), Duke of Cambridge, in the Oval Office of the White House December 8, 2014 in Washington, DC. Prince William and his wife Catherine, Duchess of Cambridge, are on a two-day official visit in the United States. (Photo by Alex Wong/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge helps to wrap Christmas presents during a visit to the Northside Center for Child Development on December 8, 2014 in New York City. The royal couple are on an official three-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C today. (Photo by Mark Stewart - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge, is greeted as she arrives for lunch at the British Consul General's Residence on December 8, 2014 in New York City. The royal couple are on an official three-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C on Monday. (Photo by Paul Edwards - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge, greets children during a visit with Chirlane McCray, the first lady of New York, to the Northside Center for Child Development on December 8, 2014 in New York City. The royal couple are on an official three-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C today. (Photo by Mark Stewart - Pool/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge, leaves after visiting Northside Center for Child Development on December 8, 2014 in New York City. The royal couple are on an official three-day visit to New York with Prince William also meeting President Barack Obama in Washington D.C on Monday. (Photo by George Pimentel/WireImage)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge greets guests at Northside Center for Child Development during her official two-day visit to the United States on December 8, 2014 in New York City. (Photo by Neilson Barnard/Getty Images)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge (R) and New York City Mayor Bill de Blasio's wife Chirlane McCray (L) meet at Northside Center for Child Development on December 8, 2014 in New York City. (Photo by Neilson Barnard/Getty Images)
NEW YORK NY - DECEMBER 07: Prince William and Kate Middleton sighting on December 7, 2014 in New York City. (Photo by Josiah Kamau/BuzzFoto/FilmMagic)
Kate, left, Duchess of Cambridge and Britain's Prince William arrive at The Carlyle hotel, Sunday, Dec. 7, 2014, in New York. They have a full schedule of events in New York, including a visit to the National Sept. 11 Memorial and Museum and an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers. (AP Photo/New York Post, Chad Rachman, Pool)
NEW YORK, NY - DECEMBER 07: Catherine, Duchess of Cambridge (R) and Prince William, Duke of Cambridge (L) arrive to The Carlyle on December 7, 2014 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - DECEMBER 07: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge (L) arrive at The Carlyle Hotel, where they will be staying during their official two-day visit to the United States, on December 7, 2014 in New York City. (Photo by Neilson Barnard/Getty Images)
NEW YORK, NY - DECEMBER 07: Prince William, Duke of Cambridge (R) and his wife, Catherine, Duchess of Cambridge, arrive at their hotel on December 7, 2014 in New York City. The royal couple are on an official two-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C on Monday. (Photo by Carl Court/Getty Images)
NEW YORK, NY - DECEMBER 07: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge (L) arrive at The Carlyle Hotel, where they will be staying during their official two-day visit to the United States, on December 7, 2014 in New York City. (Photo by Neilson Barnard/Getty Images)
NEW YORK, NY - DECEMBER 07: Prince William, Duke of Cambridge arrives to The Carlyle on December 7, 2014 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - DECEMBER 07: (NO UK SALES FOR 28 DAYS) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge arrive at The Carlyle Hotel, where they will be staying during their official two-day visit to the United States, on December 7, 2014 in New York City. (Photo by Samir Hussein/Pool/WireImage)
NEW YORK, NY - DECEMBER 07: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge arrive to The Carlyle on December 7, 2014 in New York City. (Photo by James Devaney/GC Images)
Kate, left, Duchess of Cambridge and Britain's Prince William arrive at The Carlyle Hotel, Sunday, Dec. 7, 2014, in New York. They have a full schedule of events in New York, including a visit to the National Sept. 11 Memorial and Museum and an NBA basketball game between the Brooklyn Nets and the Cleveland Cavaliers. (AP Photo/Neilson Barnard, Pool)
NEW YORK, NY - DECEMBER 07: Prince William, Duke of Cambridge (R) and his wife, Catherine, Duchess of Cambridge, arrive at their hotel on December 7, 2014 in New York City. The royal couple are on an official two-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C on Monday. (Photo by Carl Court/Getty Images)
NEW YORK, NY - DECEMBER 07: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge arrive to The Carlyle on December 7, 2014 in New York City. (Photo by James Devaney/GC Images)
LONDON, UNITED KINGDOM-NOVEMBER 13: Prince William and Kate Middleton are seen leaving the Royal Variety Performance at the Palladium Theatre on November 13, 2014 in London, England. (Photo by star/GC Images)
LONDON, UNITED KINGDOM - NOVEMBER 13: Catherine, Duchess of Cambridge leaving the Royal Variety Performance at the Palladium Theatre on November 13, 2014 in London, England. (Photo by Mark Robert Milan/FilmMagic)
LONDON, UNITED KINGDOM - NOVEMBER 13: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leaving the Royal Variety Performance at the Palladium Theatre on November 13, 2014 in London, England. (Photo by Mark Robert Milan/FilmMagic)
LONDON, ENGLAND - NOVEMBER 13: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart after attending The Royal Variety Performance at the London Palladium on November 13, 2014 in London, England. (Photo by Karwai Tang/WireImage)
LONDON, UNITED KINGDOM - NOVEMBER 13: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Royal Variety Performance at the London Palladium on November 13, 2014 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - NOVEMBER 13: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Royal Variety Performance at the London Palladium on November 13, 2014 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - NOVEMBER 13: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart after attending The Royal Variety Performance at the London Palladium on November 13, 2014 in London, England. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - NOVEMBER 13: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend The Royal Variety Performance at the London Palladium on November 13, 2014 in London, England. (Photo by Samir Hussein/WireImage)
Britain's Catherine, Duchess of Cambridge (R) and Britain's Prince William, Duke of Cambridge arrive to attend the Royal Variety Performance at the London Palladium Theatre on November 13, 2014. The Royal Variety Performance takes place annually in aid of the Entertainment Artistes Benevolent Fund (EABF) which cares for hundreds of entertainers throughout the UK who need help and assistance as a result of old age, ill-health or hard times. AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
PEMBROKE, WALES - NOVEMBER 08: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge (not pictured) visit to the Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Christopher Jones - WPA Pool / Getty Images)
PEMBROKE, WALES - NOVEMBER 08: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Samir Hussein/WireImage)
PEMBROKE, WALES - NOVEMBER 08: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Samir Hussein/WireImage)
EMBROKE, WALES - NOVEMBER 08: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit to the Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Christopher Jones - WPA Pool / Getty Images)
EMBROKE, WALES - NOVEMBER 08: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit to the Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Christopher Jones - WPA Pool / Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Max Mumby/Indigo/Getty Images)
PEMBROKE, WALES - NOVEMBER 08: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visits Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Mark Cuthbert/UK Press via Getty Images)
PEMBROKE, WALES - NOVEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the Valero Pembroke Refinery at Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Danny Martindale/WireImage)
PEMBROKE, WALES - NOVEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the Valero Pembroke Refinery at Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Danny Martindale/WireImage)
PEMBROKE, WALES - NOVEMBER 08: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge pose as they visit the Valero Pembroke Refinery at Pembroke Refinery on November 8, 2014 in Pembroke, Wales. (Photo by Danny Martindale/WireImage)
LONDON, ENGLAND - OCTOBER 21: Britain's Catherine, Duchess of Cambridge (L) and Prince William, Duke of Cambridge (R) attend the ceremonial welcome ceremony for Singapore's President Tony Tan Keng Yam at the start of a state visit at Horse Guards Parade on October 21, 2014 in London, England. The President is at the beginning of his four day stay during which he will hold a bilateral meeting with Prime Minister David Cameron. (Photo by Leon Neal - WPA Pool/Getty Images)
LONDON, ENGLAND - OCTOBER 21: Catherine, Duchess of Cambridge and Prince William, Duke of Edinburgh are seen during a ceremonial welcome for the President of Singapore at Horse Guards Parade on October 21, 2014 in London, England. The President is at the beginning of his four day stay during which he will hold a bilateral meeting with Prime Minister David Cameron. (Photo by Toby Melville - WPA Pool/Getty Images)
LONDON, UNITED KINGDOM - OCTOBER 21: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the ceremonial welcome for Singapore's President Tony Tan Keng Yam at the start of a state visit at Horse Guards Parade on October 21, 2014 in London, England. The President is at the beginning of his four day stay during which he will hold a bilateral meeting with Prime Minister David Cameron (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - OCTOBER 21: Catherine, Duchess of Cambridge and Prince William, Duke of Edinburgh smile at each other during a ceremonial welcome for the President of Singapore at Horse Guards Parade on October 21, 2014 in London, England. The President is at the beginning of his four day stay during which he will hold a bilateral meeting with Prime Minister David Cameron. (Photo by Toby Melville - WPA Pool/Getty Images)
LONDON, UNITED KINGDOM - OCTOBER 21: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the ceremonial welcome for Singapore's President Tony Tan Keng Yam at the start of a state visit at Horse Guards Parade on October 21, 2014 in London, England. The President is at the beginning of his four day stay during which he will hold a bilateral meeting with Prime Minister David Cameron (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - OCTOBER 21: Prince William, Duke of Cambridge and Catherine Duchess of Cambridge attend a Ceremonial Welcome for the President of Singapore Tony Tan Keng Yam at Horse Guards Parade on October 21, 2014 in London, England. (Photo by Samir Hussein/WireImage)
LONDON, ENGLAND - OCTOBER 21: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Official Welcome at the start of a State Visit by The President of Singapore at Horse Guards Parade on October 21, 2014 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - OCTOBER 21: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge greet the President of Singapore Tony Tan Keng Yam and his wife Mary Chee Bee Kiang at the Royal Garden Hotel on the first of a four day state visit to the UK on October 21, 2014 in London, England. (Photo by Anthony Devlin - WPA Pool/Getty Images)
LONDON, ENGLAND - OCTOBER 21: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge greet the President of Singapore Tony Tan Keng Yam and his wife Mary Chee Bee Kiang at the Royal Garden Hotel on the first of a four day state visit to the UK on October 21, 2014 in London, England. (Photo by Anthony Devlin - WPA Pool/Getty Images)
LONDON, ENGLAND - OCTOBER 21: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Singapore State Visit to the UK at the Royal Garden Hotel on October 21, 2014 in London, England. (Photo by Danny Martindale/WireImage)
LONDON, UNITED KINGDOM - AUGUST 05: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit the poppy field art installation entitled 'Blood Swept Lands and Seas of Red' by artist Paul Cummins, in the moat of the Tower of London, to commemorate the First World War on August 5, 2014 in London, England. By it's completion on Armistice Day 2014 the moat will contain 888,246 ceramic poppies, one for each British and Colonial fatality during World War One. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - AUGUST 05: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge walk through a poppy field art installation entitled 'Blood Swept Lands and Seas of Red' by artist Paul Cummins, in the moat of the Tower of London, to commemorate the First World War on August 5, 2014 in London, England. By it's completion on Armistice Day 2014 the moat will contain 888,246 ceramic poppies, one for each British and Colonial fatality during World War One. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - AUGUST 05: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge walk through a poppy field art installation entitled 'Blood Swept Lands and Seas of Red' by artist Paul Cummins, in the moat of the Tower of London, to commemorate the First World War on August 5, 2014 in London, England. By it's completion on Armistice Day 2014 the moat will contain 888,246 ceramic poppies, one for each British and Colonial fatality during World War One. (Photo by Max Mumby/Indigo/Getty Images)
Britain's Prince William and Kate, Duchess of Cambridge talk prior to the men's singles final between Roger Federer of Switzerland and Novak Djokovic of Serbia on centre court at the All England Lawn Tennis Championships in Wimbledon, London, Sunday July 6, 2014. (AP Photo/Ben Curtis)
Britain's Prince William and Kate, Duchess of Cambridge, arrive in the Royal Box prior to the men's singles final between Roger Federer of Switzerland and Novak Djokovic of Serbia on centre court at the All England Lawn Tennis Championships in Wimbledon, London, Sunday July 6, 2014. (AP Photo/Ben Curtis)
Kate, Duchess of Cambridge, Prince William, Duke of Cambridge, centre, and Prince Harry, right, watch for riders approaching the finish line of Stage 1 of the Tour De France Saturday, July 5, 2014 in Harrogate, England. The world's greatest cycle race, the Tour de France started for the first time in its history in Yorkshire this weekend. The event is expected to bring thousands of cycling fans to the region. (AP Photo/Chris Jackson, Pool)
Kate, Duchess of Cambridge, Prince William, Duke of Cambridge, rear, and Prince Harry watch as Mark Cavendish falls from his bike near the finish line of Stage 1 of the Tour De France Saturday, July 5, 2014 in Harrogate, England. The world's greatest cycle race, the Tour de France started for the first time in its history in Yorkshire this weekend. The event is expected to bring thousands of cycling fans to the region. (AP Photo/Chris Jackson, Pool)
Britain's Prince William, left, sits alongside his wife Kate, Duchess of Cambridge in the Royal Box as they watch the men's singles final match between Novak Djokovic of Serbia and Roger Federer of Switzerland at the All England Lawn Tennis Championships in Wimbledon, London, Sunday, July 6, 2014. (AP Photo/Sang Tan, Pool)
Kate, Duchess of Cambridge, watches as Mark Cavendish falls from his bike near the finish line of Stage 1 of the Tour De France Saturday, July 5, 2014 in Harrogate, England. The world's greatest cycle race, the Tour de France started for the first time in its history in Yorkshire this weekend. The event is expected to bring thousands of cycling fans to the region. (AP Photo/Chris Jackson, Pool)
Kate, Duchess of Cambridge and Prince William watch the podium ceremony of the first stage of the Tour de France cycling race over 190.5 kilometers (118.4 miles) with start in Leeds and finish in Harrogate, England, Saturday, July 5, 2014. (AP Photo/Laurent Cipriani)
NEW YORK, NY - DECEMBER 08: Catherine, Duchess of Cambridge during a visit to the Northside Center for Child Development on December 8, 2014 in New York City. The royal couple are on an official three-day visit to New York with Prince William also due to meet President Barack Obama in Washington D.C today. (Photo by Mark Stewart - Pool/Getty Images)
NEW YORK, NY - DECEMBER 07: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave a Gramercy Park residence on December 7, 2014 in New York City. (Photo by James Devaney/GC Images)
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