WINDSOR - JULY 12: Lady Diana Spencer, wearing dungarees, attends a polo match at Windsor Great Park on July 12, 1981 in Windsor, England. (Photo by Anwar Hussein/Getty Images)
WINDSOR - JULY 12: Lady Diana Spencer, wearing dungarees, attends a polo match at Windsor Great Park on July 12, 1981 in Windsor, England. (Photo by Anwar Hussein/Getty Images)