Prince William had his wife the Duchess of Cambridge, née Kate Middleton, in fits of giggles as he joked about the size of his feet. The couple were meeting basketball star LeBron James at an NBA game in New York, when the Duke was asked what size shoes he wore.
"Half the size of yours," laughed William, as he pointed down to the athlete's massive feet.
His reply prompted laughter from his pregnant wife Kate, who looked down to inspect LeBron's shoes as she held her hands protectively on her growing baby bump.
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Prince William joked that his feet were half the size of LeBron James'
The royal couple, who were attending their first NBA game on Monday night as part of their three-day tour of New York, looked relaxed and happy as they chatted to the sportsman after the match.
LeBron, also known as "King James", had brought the Cleveland Cavaliers to victory against the Brooklyn Nets, and still looked to be in high spirits as he met the Duke and Duchess.
Prince William and Kate were presented with bespoke basketball jerseys
The 29-year-old presented the couple with a gift-wrapped box of cupcakes that he had brought especially from his hometown of Akron, Ohio, and surprised them further when he pulled out two personalised Cavaliers jerseys.
William held the mini maroon one printed with the name "George 1" on the back – a gift for his and Kate's 16-month-old baby Prince George – while the Duchess held onto the yellow jersey that read "Cambridge 7".
LeBron James recorded his meeting with Prince William and Kate with a photo on Instagram
The meeting between the British royals and basketball's biggest superstar was clearly a high point for LeBron, who later took to Instagram and Twitter to share montage photos of their encounter.
"This very moment will be forever remembered and put up in my house. It's all good and all smiles on this side. #Royalty #StriveForGreatness #RWTW #LRMR #Klutch," he captioned a snap of the trio talking.
LeBron James gifted Prince William and Kate a box of cupcakes from his hometown
William and Kate experienced many firsts that day, as earlier on Monday the Prince had jetted off to Washington to have a meeting with President Barack Obama at the White House.
"It was quite daunting," admitted William of his visit, while he said of the couple's first NBA game, "'It was good, really good. Our first time."
The Duke and Duchess attended the sporting event to mark a newly forged partnership between their royal foundation and the NBA, which will support the charitable foundation's work with United For Wildlife – a cause close to William's heart.