EGHAM, ENGLAND - JUNE 24: Queen Elizabeth II and Prince Philip, Duke of Edinburgh attend The OUT-SOURCING Inc Royal Windsor Cup 2018 polo match at Guards Polo Club on June 24, 2018 in Egham, England. (Photo by Antony Jones/Getty Images)
EGHAM, ENGLAND - JUNE 24: Queen Elizabeth II and Prince Philip, Duke of Edinburgh attend The OUT-SOURCING Inc Royal Windsor Cup 2018 polo match at Guards Polo Club on June 24, 2018 in Egham, England. (Photo by Antony Jones/Getty Images)