(L-R) Britain's Prince George of Wales, Britain's Prince William, Prince of Wales, Britain's Prince Louis of Wales, Britain's Catherine, Princess of Wales, Britain's Princess Charlotte of Wales, Britain's King Charles III, Britain's Queen Camilla, Britain's Sophie, Duchess of Edinburgh, and Britain's Prince Edward, Duke of Edinburgh, pose on the balcony of Buckingham Palace after attending the King's Birthday Parade "Trooping the Colour" in London on June 15, 2024. The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1500 parading soldiers and almost 300 horses take part in the event. (Photo by HENRY NICHOLLS / AFP)