Before Meghan Markle walks down the aisle of St. George’s Chapel in just a few months, she’ll have the chance to choose from Queen Elizabeth’s remarkable archive of tiaras to ensure she’s dressed for the occasion. And if a newly resurfaced photo of the royal-to-be wearing a jeweled crown at her high school prom is anything to go by, she’ll look every inch the princess.

Shared on Twitter by fan account @MeghansMirror, the snap in question shows Meghan posing in a tiara after being crowned homecoming queen, wearing a strapless lilac dress and clutching a congratulatory bouquet. A sneak preview of what we can expect on May 19? Potentially…

While Meghan will be able to pick jewels from the royal collection ahead of her big day, there’s also a chance that she might opt for one iconic piece from outside of the Queen’s archive. As royal expert Ingrid Seward told Us Weekly, Meghan “will have access to jewels from the royal collection made available to her by the Queen. She can choose something suitable, but she might also have the Spencer tiara, which is also Prince Harry’s heritage and is the one Princess Diana wore on her wedding day.”

The headpiece in question is actually a composite of a number of Spencer family jewels: the central piece was given to Diana’s grandmother upon her wedding to the future 7th Earl Spencer in 1919, while the ends are believed to have belonged to Frances Manby, the last Viscountess of Montagu. The Spencer tiara as we know it was pieced together in the 1930s, and was worn by Diana’s elder sisters before its appearance at the royal wedding in 1981. Though the Queen had offered her future daughter-in-law the Cambridge Lovers’ Knot tiara for the occasion (a piece which the Duchess of Cambridge has worn for a number of events), Diana opted for this personal heirloom instead.

To fulfill her “something borrowed” quota for her 2011 wedding to Prince William, Kate Middleton wore the Cartier Halo Scroll tiara. Commissioned by George VI in 1936 as a gift to his wife, the Queen Mother, and passed on to the Queen upon the occasion of her 18th birthday, it boasts 739 brilliant-cut diamonds and 149 baguette diamonds.

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This post was written by Katie Rosseinsky. It originally appeared on our sister site, Grazia Daily.