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LONDON, UNITED KINGDOM - NOVEMBER 20: Diana, Princess Of Wales, Attending A Gala Evening In Aid Of Cancer Research At Bridgewater House, London Sw1. The Princess Is Wearing A Black Low-cut Evening Dress Designed By Jacques Azagury With An Embroidered Bodice Studded With Sequins. (Photo by Tim Graham Photo Library via Getty Images)

LONDON, UNITED KINGDOM - NOVEMBER 20:  Diana, Princess Of Wales,  Attending A Gala Evening In Aid Of Cancer Research At Bridgewater House, London Sw1.  The Princess Is Wearing A Black Low-cut Evening Dress Designed By Jacques Azagury With An Embroidered Bodice Studded With Sequins.  (Photo by Tim Graham Photo Library via Getty Images)