STROUD, ENGLAND - MARCH 25: Princess Anne, Princess Royal with her son Peter Phillips and granddaughters Savannah Phillips, Mia Tindall and Isla Phillips during the Gatcombe Horse Trials at Gatcombe Park on March 25, 2017 in Stroud, England. (Photo by Anwar Hussein/WireImage)
STROUD, UNITED KINGDOM - MARCH 25: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Princess Anne, The Princess Royal attends the Gatcombe Horse Trials at Gatcombe Park on March 25, 2017 in Stroud, England. (Photo by Max Mumby/Indigo/Getty Images)
STROUD, ENGLAND - MARCH 25: Princess Anne, Princess Royal attends The Gatcombe Horse Trials at Gatcombe Park on March 25, 2017 in Stroud, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
Princess Anne watches her grand daughter Mia Tindall at the Land Rover Gatcombe Horse trials in Gloucestershire. (Photo by Steve Parsons/PA Images via Getty Images)
STROUD, ENGLAND - MARCH 25: Princess Anne, Princess Royal attends The Gatcombe Horse Trials at Gatcombe Park on March 25, 2017 in Stroud, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
