Home (Second left-right) Prince Louis, Prince George and Princess Charlotte during the Trooping the Colour ceremony at Horse Guards Parade, central London, as King Charles III celebrates his first official birthday since becoming sovereign. Picture date: Saturday June 17, 2023. (Photo by Aaron Chown/PA Images via Getty Images) (Second left-right) Prince Louis, Prince George and Princess Charlotte during the Trooping the Colour ceremony at Horse Guards Parade, central London, as King Charles III celebrates his first official birthday since becoming sovereign. Picture date: Saturday June 17, 2023. (Photo by Aaron Chown/PA Images via Getty Images)

(Second left-right) Prince Louis, Prince George and Princess Charlotte during the Trooping the Colour ceremony at Horse Guards Parade, central London, as King Charles III celebrates his first official birthday since becoming sovereign. Picture date: Saturday June 17, 2023. (Photo by Aaron Chown/PA Images via Getty Images)

(Second left-right) Prince Louis, Prince George and Princess Charlotte during the Trooping the Colour ceremony at Horse Guards Parade, central London, as King Charles III celebrates his first official birthday since becoming sovereign. Picture date: Saturday June 17, 2023. (Photo by Aaron Chown/PA Images via Getty Images)

LONDON, ENGLAND – JUNE 17: Prince George of Wales, Princess Charlotte of Wales and Prince Louis of Wales ride in a horse drawn carriage with Catherine, Princess of Wales and Queen Camilla during Trooping the Colour at Horse Guards Parade on June 17, 2023 in London, England. Trooping the Colour is a traditional parade held to mark the British Sovereign’s official birthday. It will be the first Trooping the Colour held for King Charles III since he ascended to the throne. (Photo by Rob Pinney/Getty Images)
(left to right) The Prince of Wales, the Duke of Edinburgh, King Charles III and the Princess Royal depart Buckingham Palace for the Trooping the Colour ceremony at Horse Guards Parade, central London, as King Charles III celebrates his first official birthday since becoming sovereign. Picture date: Saturday June 17, 2023. (Photo by Victoria Jones/PA Images via Getty Images)