HM The Queen Attends Trooping The Colour

LONDON, ENGLAND - JUNE 09: Camilla, Duchess Of Cornwall and Catherine, Duchess of Cambridge during Trooping The Colour on the Mall on June 9, 2018 in London, England. The annual ceremony involving over 1400 guardsmen and cavalry, is believed to have first been performed during the reign of King Charles II. The parade marks the official birthday of the Sovereign, even though the Queen's actual birthday is on April 21st. (Photo by Chris Jackson/Getty Images)