LONDON, UNITED KINGDOM - JUNE 15: Prince George of Wales, Prince William, Prince of Wales (Colonel of the Welsh Guards), Prince Louis of Wales, Princess Charlotte of Wales, Catherine, Princess of Wales, King Charles III, wearing his Irish Guards uniform, and Queen Camilla watch an RAF flypast from the balcony of Buckingham Palace after attending Trooping the Colour on June 15, 2024 in London, England. Trooping the Colour, also known as The King's Birthday Parade, is a military ceremony to mark the official birthday of the British Sovereign. The ceremony takes place at Horse Guards Parade followed by a flypast over Buckingham Palace and was first performed in the mid-17th century during the reign of King Charles II. The parade features all seven regiments of the Household Division with Number 9 Company, Irish Guards being the regiment this year having their Colour Trooped. (Photo by Max Mumby/Indigo/Getty Images)