WINDSOR, UNITED KINGDOM - MAY 13: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Queen Elizabeth II and Camilla, Duchess of Cornwall watch The Queen's horse 'Tower Bridge' come 3rd in The Cuddy Heavyweight Hunter class as they attend day 1 of the Royal Windsor Horse Show in Home Park on May 13, 2015 in Windsor, England. (Photo by Max Mumby/Indigo/Getty Images)