Britain's Queen Elizabeth (R) and Prince Philip, The Duke of Edinburgh, view horses in the parade ring at the Epsom Derby festival, part of the Queen's Diamond Jubilee celebrations, in Epsom, southwest of London June 2, 2012. Queen Elizabeth gets four days of celebrations to mark her 60 years on the British throne under way on Saturday with one of her favourite pastimes, a trip to the horse races, as tributes to the long-serving monarch pour in. REUTERS/Toby Melville (BRITAIN - Tags: SPORT HORSE RACING ROYALS)