ASCOT, ENGLAND – JUNE 16: Queen Elizabeth ll and Prince Philip, Duke of Edinburgh arrive in an open carriage on Ladies Day at Royal Ascot on June 16, 2011 in Ascot, England. The five-day meeting is one of the highlights of the horse racing calendar, with 2011 marking the 300th anniversary of the annual event. Horse racing has been held at the famous Berkshire course since 1711. (Photo by Dan Kitwood/Getty Images)