ASCOT, ENGLAND - JUNE 30: Millie Brady attends the Audi Polo Challenge at Coworth Park Polo Club on June 30, 2018 in Ascot, England. (Photo by David M. Benett/Dave Benett/Getty Images for Audi UK)
ASCOT, ENGLAND - JUNE 30: Millie Brady attends the Audi Polo Challenge at Coworth Park Polo Club on June 30, 2018 in Ascot, England. (Photo by David M. Benett/Dave Benett/Getty Images for Audi UK)