CIRENCESTER, UNITED KINGDOM - JUNE 15:  Prince Charles Laughing With His 17-year-old Son Prince Harry, After They Won Their Polo Match At Cirencester Park Polo Club.  The Prince Is Delighted That Both His Sons Share His Love Of This Sport.  They Had Played In The Highgrove Team For The King Constantine Trophy In A Charity Match To Raise Funds For The Hellenic College - The Greek School In London.  (Photo by Tim Graham Photo Library via Getty Images)