LONDON, UNITED KINGDOM - JULY 14: Princess Diana attends a banquet at Claridges Hotel in London wearing the Spencer Tiara and Queen Mary's emerald and diamond choker. (Photo by Tim Graham Photo Library via Getty Images)
LONDON, UNITED KINGDOM - JULY 14: Princess Diana attends a banquet at Claridges Hotel in London wearing the Spencer Tiara and Queen Mary's emerald and diamond choker. (Photo by Tim Graham Photo Library via Getty Images)