01of 15Princess Charlotte and Kate Middleton on charity sailing day 2019.ADRIAN DENNIS/AFP/GettyKate Middletonquickly jumped into mom mode whenPrincess Charlotteplayfully stuck out her tongue (rather than wave like her mom suggested!) at an August 2019 charity sailing race.
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Princess Charlotte and Kate Middleton on charity sailing day 2019.ADRIAN DENNIS/AFP/Getty

Kate Middletonquickly jumped into mom mode whenPrincess Charlotteplayfully stuck out her tongue (rather than wave like her mom suggested!) at an August 2019 charity sailing race.
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Tim Graham/Getty

03of 15Daily Mirror/Mirrorpix/Getty… and it wasn’t the first time! Here, Harry shared his best face to photographers while traveling to Portland Hospital to visit his new cousin,Princess Beatrice.
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Daily Mirror/Mirrorpix/Getty

… and it wasn’t the first time! Here, Harry shared his best face to photographers while traveling to Portland Hospital to visit his new cousin,Princess Beatrice.
04of 15DAVID HARTLEY/REX/ShutterstockDressed in his wedding-day best, Harry looked adorable as a pageboy in 1989.
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DAVID HARTLEY/REX/Shutterstock

Dressed in his wedding-day best, Harry looked adorable as a pageboy in 1989.
05of 15ANDREW MILLIGAN/AFP/GettyPrincess Charlottecouldn’t help but show photographers how she really felt outside of St. George’s Chapel, the location of her uncle,Prince Harryand newly-minted aunt,Meghan Markle’s wedding.
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ANDREW MILLIGAN/AFP/Getty

Princess Charlottecouldn’t help but show photographers how she really felt outside of St. George’s Chapel, the location of her uncle,Prince Harryand newly-minted aunt,Meghan Markle’s wedding.
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Bob Aylott/ANL/REX/Shutterstock

07of 15Steve Wood/REX/ShutterstockPrince Williamlooked pensive during a 2003 polo match.
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Steve Wood/REX/Shutterstock

Prince Williamlooked pensive during a 2003 polo match.
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Harry, meanwhile, let loose at a Coach Core sports event in 2016.
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Because Harry just couldn’t wait to get on the field to play football back in 2016.
10of 15Tim Rooke/REX/ShutterstockWilliam playfully celebrated Edward Van Cutsem and Lady Tamara Grosvenor’s wedding day in 2004.
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Tim Rooke/REX/Shutterstock

William playfully celebrated Edward Van Cutsem and Lady Tamara Grosvenor’s wedding day in 2004.
11of 15JEREMY SELWYN/AFP/GettyHarry shared his take on a proper boxing stance.
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JEREMY SELWYN/AFP/Getty

Harry shared his take on a proper boxing stance.
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… and the best way to take in a sporting event.
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And in case you were wondering, yes, Charlotte is pretty much her uncle’s twin.
14of 15David Hartley/REX/ShutterstockNot even the Queen is immune to showing her silly side.
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David Hartley/REX/Shutterstock

Not even the Queen is immune to showing her silly side.
15of 15REX/Shutterstock… and neither wasPrince Philip.
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REX/Shutterstock

… and neither wasPrince Philip.
source: people.com