Cartier International Polo Day 2011 was held at Guards Polo Club, Windsor Great Park, Egham, England. on Jul. 24, 2011. Cartier International Day, in association with the Hurlingham Polo Association, is the world's greatest spectator polo day. The main highlight of the day is the afternoon match for the Coronation Cup, which features the vey best English players. Christie Brinkley attends.