TETBURY, UNITED KINGDOM - JULY 18: Princess Diana With Her Sons, William And Harry As They Play In The Grounds Of Highgrove. William Is Riding A Pony (Photo by Tim Graham Photo Library via Getty Images)
TETBURY, UNITED KINGDOM - JULY 18: Princess Diana With Her Sons, William And Harry As They Play In The Grounds Of Highgrove. William Is Riding A Pony (Photo by Tim Graham Photo Library via Getty Images)