Prince William and Duchess Kate Middleton are expecting their third child

Royal baby en route!

The Duke and Duchess of Cambridge, Prince William and Kate Middleton, are expecting their third child, Kensington Palace announced Monday.

"The Queen and members of both families are delighted with the news," the Palace said.

Prince William and Duchess Kate's love story:

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Prince William and Duchess Kate Middleton's love story
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Prince William and Duchess Kate Middleton's love story

THE MEET-CUTE

Let’s rewind to the year 2002, when Prince William and Middleton were two young sophomores at the University of St. Andrews in Fife, Scotland. Middleton (philanthropist extraordinaire) volunteered to model in a charity fashion show, and William (a real life prince) paid £200—about $360—to sit front row. Although the Duke of Cambridge was immediately interested in the future Duchess, she was going steady with some university plebeian. When she ended the relationship later that year, her knight prince in shining armor was ready and waiting.

Photo credit: Getty

THE HONEYMOON STAGE

The first photos of Prince William and his new girlfriend surfaced in April 2004. Over the course of the next year, the young lovebirds made several public appearances together in the form of romantic ski getaways and plus-one wedding dates. They even held a joint luncheon with their families to celebrate their June 2005 graduation from St. Andrews.

Photo credit: Getty

THE BREAKUP

After four years of young love, the pair broke things off (gasp) in 2007. A few months prior to their official split, the Middleton family invited William to join them on a holiday getaway to the posh Scottish castle, Jordanstone House. The prince agreed to attend but changed his mind at the last minute, which (understandably) upset K-Middy and sparked tension in the relationship. Over the next few months, the couple rarely saw each other and called it quits in April.

Photo credit: Getty

THE REKINDLING

Following their breakup, both William and Kate became darlings of the London socialite scene. Thankfully, their separation lasted only five months, and by August 2007 they were back together. The pair decided to do things differently this time around and kept their relationship low-key. Naturally, the prince whisked Kate off to the Seychelles, booked an entire resort for their private use and checked in under the names of Martin and Rosemary. You know, for privacy.

Photo credit: Getty

THE ENGAGEMENT

William popped the question while he and Middleton were enjoying a romantic jaunt in Kenya in October 2010. The couple kept their happy news a secret until the following month when the royal family officially announced their engagement to the press and K-Middy stepped out sporting the late Princess Diana’s stunning blue-sapphire-and-diamond ring on her left ring finger. Oh, this old thing?

Photo credit: Getty

THE WEDDING

On April 29, 2011, the wedding of the decade our lifetime took place at Westminster Abbey in London. Kate rolled up to the ceremony in a Rolls-Royce Phantom VI (because why not?) and stunned in an ivory silk and tulle Alexander McQueen gown. After sealing the deal, Middleton emerged from the Abbey with two new titles: Mrs. William Arthur Philip Louis and Her Royal Highness The Duchess of Cambridge. Not too shabby.

Photo credit: Getty

THE FIRSTBORN CHILD

The Duke and Duchess of Cambridge welcomed their first child, Prince George Alexander Louis, on July 22, 2013. George was only one day old when he made his first public appearance on the steps of St. Mary's Hospital and—since practice makes perfect—the four-year-old is a natural ham in front of the camera.

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THE SECOND-BORN PRINCESS

Two years later, royal baby fever struck again when the family welcomed their second child, Princess Charlotte Elizabeth Diana, on May 2, 2015. Char’s birth earned her a spot behind Prince George as the fourth heir in line to the throne, which bumped Uncle Harry down to fifth in line. Sorry, Harry, but you can’t beat Char’s royal dedication. Have you seen her first curtsy?

Photo credit: Getty

RELATED: HER MINI MAJESTY: PRINCESS CHARLOTTE BEARS AN UNCANNY RESEMBLANCE TO QUEEN ELIZABETH II

...AND THEY LIVED HAPPILY EVER AFTER

From uni to parenthood, the Duke and the Duchess have come a long way. The family of four currently resides at Kensington Palace in London, which recently underwent a $6.5 million renovation. Sounds like they may be making room for baby number three... JK, there’s plenty of room. It’s a palace.

Photo credit: Getty

RELATED: ROYAL TOUR ALERT: KATE MIDDLETON IS OFFICIALLY MODEST

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Kate is once again suffering from extreme morning sickness, Hyperemesis Gravidarum, which ailed her first two pregnancies as well. She had been planning to carry out an engagement today at the Hornsey Road Children's Centre in London, but cancelled it due to her illness.

The Duchess is being cared for at Kensington Palace.

The last time we saw Kate was during a visit to the White Garden with William and Harry to commemorate Princess Diana's life and loss. She may have already been suffering from her illness but clearly wanted to be there with her husband and brother-in-law to remember their late mother.

Kate and William's two little ones, George and Charlotte, are 4 and 2. Soon to be a big brother again, Prince George starts his first day of school at Thomas's Battersea on Thursday September 7th. If Kate is feeling up to it, she and William had planned to take George to his first day.

See photos of Prince George and Princess Charlotte:

31 PHOTOS
George and Charlotte at Trooping the Colour 2017
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George and Charlotte at Trooping the Colour 2017
LONDON, UNITED KINGDOM - JUNE 17:Princess Charlotte of Cambridge and Prince George of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - JUNE 17: Queen Elizabeth II, Prince Philip, Duke of Cambridge, Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look on from the balcony during the annual Trooping The Colour parade on June 17, 2017 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge look on from the balcony during the annual Trooping The Colour parade on June 17, 2017 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look on from the balcony during the annual Trooping The Colour parade on June 17, 2017 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, UNITED KINGDOM - JUNE 17:Princess Charlotte of Cambridge, Prince George of Cambridge, Savannah Phillips and Isla Phillips watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Prince George of Cambridge, Prince William, Duke of Cambridge, Savannah Phillips, Peter Phillips, Isla Phillips and Autumn Phillips watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Prince Philip, Duke of Edinburgh, Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Princess Charlotte of Cambridge and Prince George of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
Catherine, Duchess of Cambridge, Princess charlotte, Prince George and Prince William The Duke of Cambridge attending Trooping the Colour on The Mall, London. Photo Credit should read Doug Peters/EMPICS Entertainment
LONDON, UNITED KINGDOM - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: (Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Prince George of Cambridge and Princess Charlotte of Cambridge watch from a window of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Prince George of Cambridge and Princess Charlotte of Cambridge watch from a window of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: Prince George of Cambridge and Princess Charlotte of Cambridge watch from a window of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, UNITED KINGDOM - JUNE 17: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge watch the flypast from the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
LONDON, ENGLAND - JUNE 17: Queen Elizabeth II, Prince Philip, Duke of Cambridge, Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look on from the balcony during the annual Trooping The Colour parade on June 17, 2017 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - JUNE 17: Queen Elizabeth II, Prince Philip, Duke of Cambridge, Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look on from the balcony during the annual Trooping The Colour parade on June 17, 2017 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
Members of the Royal Family (L-R) Britain's Prince Philip, Duke of Edinburgh, Britain's Prince Harry, Britain's Catherine, Duchess of Cambridge (with Princess Charlotte and Prince George), and Britain's Prince William, Duke of Cambridge, stand on the balcony of Buckingham Palace to watch a fly-past of aircraft by the Royal Air Force, in London on June 17, 2017. The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. In 1748, it was decided that the parade would be used to mark the official birthday of the Sovereign. More than 600 guardsmen and cavalry make up the parade, a celebration of the Sovereign's official birthday, although the Queen's actual birthday is on 21 April. / AFP PHOTO / Chris J Ratcliffe (Photo credit should read CHRIS J RATCLIFFE/AFP/Getty Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by DMC/GC Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by DMC/GC Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by DMC/GC Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by DMC/GC Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by DMC/GC Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the Trooping the Colour parade on June 17, 2017 in London, England. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look on from the balcony during the annual Trooping The Colour parade on June 17, 2017 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
(left to right) Duchess of Cornwall, The Prince of Wales, Princess Eugenie, Queen Elizabeth II, Princess Beatrice, The Duke of Edinburgh, Duchess of Cambridge, Princess Charlotte, Prince George and The Duke of Cambridge on the balcony of Buckingham Palace, in central London, following the Trooping the Colour ceremony at Horse Guards Parade as the Queen celebrates her official birthday today.
LONDON, ENGLAND - JUNE 17: Catherine, Duchess of Cambridge, Princess Charlotte of Cambridge, Prince George of Cambridge and Prince William, Duke of Cambridge look out from the balcony of Buckingham Palace during the annual Trooping the Colour parade on June 17, 2017 in London, England. (Photo by Anwar Hussein/WireImage)
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