01of 11Tim Graham/Getty ImagesIn Brisbane, Australia,Princess Dianawearsthe Spencer family tiara, an heirloom that actually belongs to her family — not toQueen Elizabeth.
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Tim Graham/Getty Images

In Brisbane, Australia,Princess Dianawearsthe Spencer family tiara, an heirloom that actually belongs to her family — not toQueen Elizabeth.
02of 11Anwar Hussein/WireImageDiana in the Spencer family tiara on her wedding day in July 1981.
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Anwar Hussein/WireImage

Diana in the Spencer family tiara on her wedding day in July 1981.
03of 11Tim Graham/GettyOne of Diana’s favorite toppers wasthe Cambridge Lover’s Knot tiara. She wore it here with an embellished Catherine Walker dress and jacket — nicknamed her “Elvis dress” in Hong Kong.
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Tim Graham/Getty

One of Diana’s favorite toppers wasthe Cambridge Lover’s Knot tiara. She wore it here with an embellished Catherine Walker dress and jacket — nicknamed her “Elvis dress” in Hong Kong.
04of 11Tim Graham/Getty ImagesShe breaks out the Spencer family tiara in St. Johns, Canada.
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She breaks out the Spencer family tiara in St. Johns, Canada.
05of 11Anwar Hussein/Getty ImagesIn Vancouver, she wears the Cambridge Lover’s Knot. Diana’s daughter-in-law,Princess Kate, has made the tiara her signature, too.
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Anwar Hussein/Getty Images

In Vancouver, she wears the Cambridge Lover’s Knot. Diana’s daughter-in-law,Princess Kate, has made the tiara her signature, too.
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07of 11Tim Graham/Getty ImagesThe Spencer tiara is made of diamonds, which are shaped into tulips and stars. It hasn’t beenworn publically since Diana’s death in 1997.
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The Spencer tiara is made of diamonds, which are shaped into tulips and stars. It hasn’t beenworn publically since Diana’s death in 1997.
08of 11Tim Graham/Getty ImagesThe Cambridge Lover’s Knot makes an appearance with a one-shouldered dress at the Itamarati Palace, which is the official residence of the President of Brazil. It’s part of the royal family’s private collection, and belongs to Queen Elizabeth.
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The Cambridge Lover’s Knot makes an appearance with a one-shouldered dress at the Itamarati Palace, which is the official residence of the President of Brazil. It’s part of the royal family’s private collection, and belongs to Queen Elizabeth.
09of 11Tim Graham/Getty ImagesAt a banquet in London, Diana pairs the Spencer family tiara with a diamond and emerald necklace.
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At a banquet in London, Diana pairs the Spencer family tiara with a diamond and emerald necklace.
10of 11Tim Graham/Getty ImagesShe later wears that necklace as a tiara — of sorts — while in Melbourne, Australia.
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She later wears that necklace as a tiara — of sorts — while in Melbourne, Australia.
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source: people.com