WINDSOR, ENGLAND - MAY 11: Queen Elizabeth II walks in the grounds at Windsor Castle during The Royal Windsor Horse Show on May 11, 2013 in Windsor, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
WINDSOR, ENGLAND - MAY 11: Queen Elizabeth II walks in the grounds at Windsor Castle during The Royal Windsor Horse Show on May 11, 2013 in Windsor, England. (Photo by Mark Cuthbert/UK Press via Getty Images)