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WASHINGTON, DC - NOVEMBER 11: Diana, Princess of Wales, wearing a cream lace gown with a scalloped neckline designed by Murray Arbeid and the Cambridge Lover's Knot diamond and pearl tiara, smiles as she attends a dinner at the British Ambassador's Residence on November 11, 1985 in Washington, DC. (Photo by Anwar Hussein/Getty Images)

WASHINGTON, DC - NOVEMBER 11: Diana, Princess of Wales, wearing a cream lace gown with a scalloped neckline designed by Murray Arbeid and the Cambridge Lover's Knot diamond and pearl tiara, smiles as she attends a dinner at the British Ambassador's Residence on November 11, 1985 in Washington, DC. (Photo by Anwar Hussein/Getty Images)