STROUD, UNITED KINGDOM - MARCH 25: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Isla Phillips, Mia Tindall and Savannah Phillips play with a dog as they attend the Gatcombe Horse Trials at Gatcombe Park on March 25, 2017 in Stroud, England. (Photo by Max Mumby/Indigo/Getty Images)