Prince Harry pays tribute to Princess Diana in 'tearful speech' at wedding reception (Exclusive)

There were lots of mixed emotions during Prince Harry and Meghan Markle's royal wedding festivities on Saturday.

A source opens up to ET about some touching moments at the couple’s lunchtime reception at St. George's Hall in Windsor Castle that was hosted by Harry's grandmother, Queen Elizabeth II.

“Harry gave a tearful speech paying tribute to his own mother missing from the festivities,” the source tells ET. “He also thanked Meghan’s mother [Doria Ragland] for giving him permission to marry Meghan. He talked about how they made a great team.”

Anytime Harry referred to Meghan as “his wife,” the guests cheered, the source notes.

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The best photos from Meghan and Harry's royal wedding

Prince Harry, Duke of Sussex and the Duchess of Sussex hold hands in the Ascot Landau Carriage as their carriage procession rides along the Long Walk, on May 19, 2018 after their wedding ceremony.

(Photo by Yui Mok - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex emerge from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Ben Birchall / POOL / AFP) 

Ms. Meghan Markle walks down the aisle at the start of her wedding to Prince Harry in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Danny Lawson - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex leave from the West Door of St George's Chapel, Windsor Castle, in Windsor on May 19, 2018 in Windsor, England.

(Photo by Ben STANSALL - WPA Pool/Getty Images)

The Duke and Duchess of Sussex on the steps of St George's Chapel at Windsor Castle following their wedding ceremony in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Danny Lawson - WPA Pool/Getty Images)

Prince Harry, Duke of Sussex and The Duchess of Sussex leave St George's Chapel, Windsor Castle after their wedding ceremony on May 19, 2018 in Windsor, England.

(Photo by Andrew Matthews - WPA Pool/Getty Images)

Princess Charlotte sticks out her tongue as she rides in a car to the wedding of Prince Harry and Meghan Markle at St George's Chapel in Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Andrew Milligan - WPA/Getty Images)

Britain's Prince Harry, Duke of Sussex kisses his wife Meghan, Duchess of Sussex as they leave from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Danny Lawson / POOL / AFP)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex wave from the Ascot Landau Carriage during their carriage procession on Castle Hill outside Windsor Castle in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Paul ELLIS / POOL / AFP) 

US actress Meghan Markle, accompanied by Britain's Prince Charles, Prince of Wales walks down the aisle toward her husband-to-be Britain's Prince Harry, Duke of Sussex, in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 during their wedding ceremony.

(Photo by Dominic Lipinski / POOL / AFP)

Meghan Markle and her mother, Doria Ragland, are driven along the Long Walk as they arrive for her wedding ceremony to marry Britain's Prince Harry, Duke of Sussex, at St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018.

(Photo by EMMANUEL DUNAND / AFP) 

Prince Harry and Meghan Markle during their wedding service, conducted by the Archbishop of Canterbury Justin Welby in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Dominic Lipinski - WPA Pool/Getty Images)

Princess Charlotte on the steps of St George's Chapel after the wedding of Prince Harry and Meghan Markle in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Jane Barlow - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex emerge from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Ben STANSALL / POOL / AFP) 

Meghan Markle is driven to St George's Chapel in Windsor Castle along with her page boys Brian and John Mulroney at St George's Chapel at Windsor Castle before the wedding of Prince Harry to Meghan Markle on May 19, 2018 in Windsor, England.

(Photo by Toby Melville- WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and Meghan Markle, Duchess of Sussex, stand together at the altar in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 during their wedding ceremony.

(Photo by Dominic Lipinski / POOL / AFP)

Prince Harry, arrives with his best man Prince William, Duke of Cambridge for the wedding ceremony of Prince Harry and US actress Meghan Markle at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Odd Anderson - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex arrive back at Windsor Castle in the Ascot Landau Carriage after their wedding ceremony and after their procession in Windsor, on May 19, 2018.

(Photo by Steve Parsons / POOL / AFP)

Meghan Markle's mother Doria Ragland, Britain's Prince Charles, Prince of Wales and Britain's Camilla, Duchess of Cornwall leave the wedding ceremony of Britain's Prince Harry, Duke of Sussex and Meghan Markle.

(Photo by Ben STANSALL / POOL / AFP) 

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According to the source, Harry asked if anyone could play the piano and Elton John -- Diana's friend -- happily obliged, and performed four songs, including, “The Circle of Life,” “Tiny Dancer,” “Our Song” and “I’m Still Standing.” The source says Harry is a huge Disney and Lion King fan, adding that he and Meghan once went on a date to see Moana.

During the evening reception at Frogmore House, the source tells ET that Kate Middleton, Prince William and Harry all hit the dance floor with their celebrity friends, and British actor Idris Elba even took a turn DJ’ing at one point. To toast the couple, ET has learned that there was a ginger-and-rum cocktail in honor of the newlyweds.

Also at the evening reception, one of Prince William and Prince Harry’s closest friends, Charlie van Straubenzee, gave a “hilarious and naughty speech,” which roasted Harry, according to the source.

“It left the crowd in stitches,” the source says. “William had warned Harry before the wedding that it was payback time.”

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Prince Harry and Meghan Markle's wedding
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Prince Harry and Meghan Markle's wedding
WINDSOR, UNITED KINGDOM - MAY 19: Britain's Prince Harry, Duke of Sussex kisses his wife Meghan, Duchess of Sussex as they leave from the West Door of St George's Chapel, Windsor Castle, in Windsor on May 19, 2018 in Windsor, England. (Photo by Ben STANSALL - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry and Meghan Markle leave St George's Chapel through the west door after their wedding in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Ben Birchall - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex, (L) and US fiancee of Britain's Prince Harry Meghan Markle arrive at the High Altar for their wedding ceremony in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Jonathan Brady / POOL / AFP) (Photo credit should read JONATHAN BRADY/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry and Meghan Markle leave St George's Chapel after their wedding in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Ben Birchall - WPA Pool/Getty Images)
US actress Meghan Markle arrives for the wedding ceremony to marry Britain's Prince Harry, Duke of Sussex, at St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Andrew Matthews / POOL / AFP) (Photo credit should read ANDREW MATTHEWS/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry (left) walks with his best man, Prince William Duke of Cambridge, as he arrives at St George's Chapel at Windsor Castle for his wedding to Meghan Markle, on May 19, 2018 in Windsor, England. (Photo by Brian Lawless - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Meghan Markle arrives for the wedding ceremony to marry Prince Harry at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Ben Stansall - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry, Duke of Sussex and The Duchess of Sussex depart following their wedding in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Jonathan Brady - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry (left) walks with his best man, Prince William Duke of Cambridge, as he arrives at St George's Chapel at Windsor Castle for his wedding to Meghan Markle, on May 19, 2018 in Windsor, England. (Photo by Brian Lawless - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex, (L) and US fiancee of Britain's Prince Harry Meghan Markle arrive at the High Altar for their wedding ceremony in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Jonathan Brady / POOL / AFP) (Photo credit should read JONATHAN BRADY/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry (right) and his best man, Prince William, Duke of Cambridge take their seats at St George's Chapel at Windsor Castle before the wedding of Prince Harry to Meghan Markle on May 19, 2018 in Windsor, England. (Photo by Jonathan Brady - WPA Pool/Getty Images)
Prince Harry's niece and bridesmaid Princess Charlotte (R) arrives for the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle at St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Andrew Matthews / POOL / AFP) (Photo credit should read ANDREW MATTHEWS/AFP/Getty Images)
Prince Harry's niece and bridesmaid Princess Charlotte arrives for the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle at St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Chris Jackson / POOL / AFP) (Photo credit should read CHRIS JACKSON/AFP/Getty Images)
WINDSOR, ENGLAND - MAY 19: Prince Harry, Duke of Sussex and The Duchess of Sussex leave Windsor Castle in the Ascot Landau carriage during a procession after getting married at St Georges Chapel on May 19, 2018 in Windsor, England. (Photo by Gareth Fuller - WPA/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Catherine, Duchess of Cambridge (2ndL) and Jessica Mulroney (L) hold bridesmaids hands as they arrive for the wedding ceremony of Prince Harry and US actress Meghan Markle at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Ben Stansall - WPA Pool/Getty Images)
US actress Meghan Markle arrives for the wedding ceremony to marry Britain's Prince Harry, Duke of Sussex, at St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Ben STANSALL / POOL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Meghan Markle arrives for the wedding ceremony to marry Prince Harry at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Ben Stansall - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: (L-R) Prince Charles, Prince of Wales, Camilla, Duchess of Cornwall, Catherine, Duchess of Cambridge, Prince Andrew, Duke of York, Princess Beatrice, Princess Eugenie and Jack Brooksbank take their seats at St George's Chapel at Windsor Castle before the wedding of Prince Harry to Meghan Markle on May 19, 2018 in Windsor, England. (Photo by Jonathan Brady - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex kisses his wife Meghan, Duchess of Sussex as they leave from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony. (Photo by Ben Birchall / POOL / AFP) (Photo credit should read BEN BIRCHALL/AFP/Getty Images)
US actress Meghan Markle (C) walks down the aisle in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 during her wedding to Britain's Prince Harry, Duke of Sussex. (Photo by Danny Lawson / POOL / AFP) (Photo credit should read DANNY LAWSON/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: A general view of guests arriving in St George's Chapel at Windsor Castle before the wedding of Prince Harry to Meghan Markle on May 19, 2018 in Windsor, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex wave from the Ascot Landau Carriage during their carriage procession on Castle Hill outside Windsor Castle in Windsor, on May 19, 2018 after their wedding ceremony. (Photo by PHIL NOBLE / POOL / AFP) (Photo credit should read PHIL NOBLE/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry looks at his bride, Meghan Markle, as she arrives accompanied by Prince Charles, Prince of Wales during their wedding in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Jonathan Brady - WPA Pool/Getty Images)
WINDSOR, ENGLAND - MAY 19: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex leave Windsor Castle in the Ascot Landau carriage during a procession after getting married at St Georges Chapel on May 19, 2018 in Windsor, England. Prince Henry Charles Albert David of Wales marries Ms. Meghan Markle in a service at St George's Chapel inside the grounds of Windsor Castle. Among the guests were 2200 members of the public, the royal family and Ms. Markle's Mother Doria Ragland. (Photo by Leon Neal/Getty Images)
Britain's Prince Harry, Duke of Sussex, (L) and US fiancee of Britain's Prince Harry Meghan Markle arrive at the High Altar for their wedding ceremony in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Jonathan Brady / POOL / AFP) (Photo credit should read JONATHAN BRADY/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry lifts the veil of Meghan Markle during their wedding ceremony in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Owen Humphreys - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall attend the wedding of Prince Harry and Meghan Markle in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Jonathan Brady - WPA Pool/Getty Images)
WINDSOR, ENGLAND - MAY 19: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex leave Windsor Castle in the Ascot Landau carriage during the procession after getting married at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. Prince Henry Charles Albert David of Wales marries Ms. Meghan Markle in a service at St George's Chapel inside the grounds of Windsor Castle. Among the guests were 2200 members of the public, the royal family and Ms. Markle's Mother Doria Ragland. (Photo by Mark Milan/GC Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry and Meghan Markle during their wedding service, conducted by the Archbishop of Canterbury Justin Welby in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Dominic Lipinski - WPA Pool/Getty Images)
Britain's Prince Philip, Duke of Edinburgh waits in the chapel ahead of the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Jonathan Brady / POOL / AFP) (Photo credit should read JONATHAN BRADY/AFP/Getty Images)
Bishop Michael Bruce Curry gives a reading during the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Owen Humphreys / POOL / AFP) (Photo credit should read OWEN HUMPHREYS/AFP/Getty Images)
US fiancee of Britain's Prince Harry Meghan Markle (L) in St George's Chapel, Windsor Castle for her wedding to Britain's Prince Harry, Duke of Sussex, watched by (middle row L-R) Britain's Queen Elizabeth II, Britain's Prince Philip, Duke of Edinburgh, Britain's Prince Edward, Earl of Wessex, Page boy James, Viscount Severn, Britain's Sophie, Countess of Wessex, Britain's Lady Louise Windsor, Britain's Princess Anne, Princess Royal, Vice Admiral Timothy Laurence, (front row L-R) Britain's Prince William, Duke of Cambridge, Britain's Prince Charles, Prince of Wales, Britain's Camilla, Duchess of Cornwall, Duchess of Britain's Catherine, Duchess of Cambridge, and Britain's Prince Andrew, Duke of York. in the chapel for the wedding ceremony of Britain's Prince Harry, Duke of Sussex and US actress Meghan Markle in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018. (Photo by Jonathan Brady / POOL / AFP) (Photo credit should read JONATHAN BRADY/AFP/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry and Meghan Markle exchange vows during their wedding ceremony in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Owen Humphreys - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry places the wedding ring on the finger of Meghan Markle during their wedding service, conducted by the Archbishop of Canterbury Justin Welby in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England. (Photo by Jonathan Brady - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex (L) sits with US actress Meghan Markle (R) during the reading in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 during their wedding ceremony. (Photo by Owen Humphreys / POOL / AFP) (Photo credit should read OWEN HUMPHREYS/AFP/Getty Images)
Prince Harry and Meghan Markle ride in an Ascot Landau along the Long Walk after their wedding in St George's Chapel in Windsor Castle. (Photo by Mike Egerton/PA Images via Getty Images)
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