Prince Charles and Princess Diana got dolled up in Klondike fashion during their 1983 royal tour of Canada.Photo: Anwar Hussein EMPICS Entertainment
Charlotte Casiraghi dressed up during the themed 2014 Gucci Paris Masters competition in 2014 where she rode to hip hop music. Photo: Zabulon Laurent ABACA/PA Images
Princess Beatrice wore a green tutu and matching knee-high socks to compete in the 2010 London Marathon on behalf of her mother's Children in Crisis charity.Photo: Arrow Press EMPICS Entertainment
Prince Harry was dressed and ready to play the part of Conrade back in 2003 for the Eton College production of William Shakespeare's Much Ado about Nothing.Photo: Kirsty Wigglesworth PA Archive/PA Images
Princess Beatrice was the cat's meow donning a feline get-up for the 2016 Unicef Halloween Ball in London. Photo: Dominic Lipinski PA Wire/PA Images
Crown Princess Victoria and Princess Madeleine of Sweden channeled their inner Marie Antoinette for an 18th century-themed birthday party in Stockholm back in 2005. Photo: Suvad Mrkonjic/Stella Pictures/ABACA ABACA/PA Images
Prince William's younger brother adorably dressed up in a red goblin costume for a 1987 nativity play at his nursery school.Photo: PA PA Archive/PA Images
Prince Andrew and Sarah Ferguson dressed up in period costumes at a replica Klondike village during their first official tour together in Canada back in 1987.Photo: PA PA Archive/PA Images
Prince Edward looked sharp in his Blondello costume during rehearsals for Shakespeare's The Taming of the Shrew at Haddo House, Aberdeen in 1985.Photo: PA PA Archive/PA Images
Just call him Lord Zalburg! Prince Edward dressed for the 1984 Cambridge Graduate Review of Captain Curious and his Incredible Quest.Photo: PA PA Archive/PA Images
Kate Middleton looked groovy stepping out in a disco-inspired ensemble for a 2008 Day-Glo Midnight Roller Disco event in London. Photo: Johnny Green PA Archive/PA Images
Princess Leonore looked cute as a bug posing in a red-frilled costume complete with an antenna headband for her 2015 Halloween photo.Photo: Facebook/PrincessMadeleineOfSweden
Prince George's uncle made an adorable shepherd in 1988 participating in his school's nativity play. Photo: BELL RON BELL PA Archive/PA Images