The Festival Of British Eventing [Getty Images]

STROUD, UNITED KINGDOM - AUGUST 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Sophie, Countess of Wessex and Autumn Phillips watch their children play on an inflatable slide as they attend day 2 of the Festival of British Eventing at Gatcombe Park on August 8, 2015 in Stroud, England. (Photo by Max Mumby/Indigo/Getty Images)

Getty Images Entertainment Max Mumby/Indigo