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NEW ZEALAND - APRIL 29: Princess Diana Adjusting Her Tiara During Banquet In New Zealand. Her Cream Silk Organza Frilly Evening Dress Was Designed By Fashion Designer Gina Fratini (Photo by Tim Graham Photo Library via Getty Images)

NEW ZEALAND - APRIL 29:  Princess Diana Adjusting Her Tiara During Banquet In New Zealand.  Her Cream Silk Organza Frilly Evening Dress Was Designed By Fashion Designer Gina Fratini  (Photo by Tim Graham Photo Library via Getty Images)