Diana, Princess of Wales wears the Spencer tiara to a banque [Getty Images]

AUSTRALIA - NOVEMBER 07: Diana, Princess of Wales wears the Spencer tiara to a banquet in Canberra, Australia (Photo by Tim Graham Photo Library via Getty Images) — see more

AUSTRALIA - NOVEMBER 07: Diana, Princess of Wales wears the Spencer tiara to a banquet in Canberra, Australia (Photo by Tim Graham Photo Library via Getty Images)

Tim Graham Photo Library Tim Graham