LONDON, UNITED KINGDOM - JUNE 17: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge stands on the balcony of Buckingham Palace during the annual Trooping the Colour Parade on June 17, 2017 in London, England. Trooping the Colour is a military parade to mark Queen Elizabeth II's official birthday and dates back to the time of Charles II in the 17th Century when the Colours of a Regiment were used as a rallying point in battle. (Photo by Max Mumby/Indigo/Getty Images)
