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STROUD, ENGLAND - MARCH 26: Mia Tindall, Savannah Phillips and Isla Phillips attend The Gatcombe Horse Trials at Gatcombe Park on March 26, 2017 in Stroud, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

STROUD, ENGLAND - MARCH 26:  Mia Tindall, Savannah Phillips and Isla Phillips attend The Gatcombe Horse Trials at Gatcombe Park on March 26, 2017 in Stroud, England.  (Photo by Mark Cuthbert/UK Press via Getty Images)