Diana At Polo In Cirencester [Getty Images]

CIRENCESTER, UNITED KINGDOM - AUGUST 09: Princess Diana Watching A Polo Match In Cirencester. (Photo by Tim Graham Photo Library via Getty Images) — see more

CIRENCESTER, UNITED KINGDOM - AUGUST 09: Princess Diana Watching A Polo Match In Cirencester. (Photo by Tim Graham Photo Library via Getty Images)

Tim Graham Photo Library Tim Graham