June 4th, 2011-The royal family, including HM Queen Elizabeth, Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Prince Harry, Princess Eugenie of York, Princess Beatrice of York, Prince Edward, Earl of Wessex, Sophie, Countess of Wessex, and Prince Philip, Duke of Edinburgh, all attend Investec Derby Day at the Investec Derby Festival at Epsom Downs Racecourse in Epsom, England.