TETBURY, UNITED KINGDOM - JUNE 18: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Zara Phillips and daughter Mia Tindall attend the Maserati Royal Charity Polo Trophy Match on June 18, 2016 in Tetbury, England. (Photo by Max Mumby/Indigo/Getty Images)

TETBURY, UNITED KINGDOM - JUNE 18: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Zara Phillips and daughter Mia Tindall attend the Maserati Royal Charity Polo Trophy Match on June 18, 2016 in Tetbury, England. (Photo by Max Mumby/Indigo/Getty Images)