AUKLAND,  NEW ZEALAND - APRIL 29:  Diana, Princess of Wales wears the Cambridge Lover's Knot tiara (Queen Mary's Tiara) and diamond earrings during a banquet on April 29, 1983 in Aukland, New Zealand.   Catherine, Duchess of Cambridge wore the same tiara at a diplomatic reception at  Buckingham Palace in December 2015. (Photo by Anwar Hussein/Getty Images)