LONDON, ENGLAND – JUNE 09: Queen Elizabeth II, Prince Charles, Prince of Wales, Meghan, Duchess of Sussex, Prince Harry, Duke of Sussex, Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge on the balcony of Buckingham Palace during Trooping The Colour 2018 at 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 Karwai Tang/WireImage)
Former King Constantine II of Greece, attends an event in honor of the 93 athletes of the Greek mission to the Rio 2016 Olympic Games, at Zappeion hall, in Athens on September 19, 2016 (Photo by Panayiotis Tzamaros/NurPhoto via Getty Images)
