STROUD, UNITED KINGDOM - AUGUST 07: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Zara Phillips rides her horse 'Toytown' in the main arena during his official retirement ceremony on day 3 of The Festival of British Eventing at Gatcombe Park on August 7, 2011 in Stroud, England. (Photo by Indigo/Getty Images)