"On July 29, 1981, Prince Charles and Lady Diana Spencer were photographed on their wedding day at St. Paul’s Cathedral in London, an event watched by an estimated global television audience of 750 million. Diana, just 20 years old, wore her now-iconic ivory silk taffeta and antique lace gown designed by David and Elizabeth Emanuel, with a dramatic 25-foot train, the longest in royal wedding history." | History Through Time