Home (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) (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)

(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)

(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)

(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)
Members of the Household division on The Mall before 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)