The tiara hadn’t been seen since it was last worn by Princess Margaret in 1965 until Meghan’s wedding day in May.
A fashion expert has now predicted that Princess Eugenie's wedding dress will be 'very different' to what Kate and Meghan wore for their weddings.
Anna Mewes, personal stylist and image consultant, told Express: 'Princess Eugenie is known for breaking Royal traditions when it comes to dressing and I imagine she will do the same when it comes to her wedding dress.
'I expect her dress will be very different to the styles Kate and Meghan chose for their own weddings.'
Anne also predicts that Eugenie will wear her mother's tiara.
'She will almost certainly wear a tiara and I think it would be a lovely touch if she opted for the same one her mother wore for her wedding to the Duke of York,' she said.
Sarah's tiara was a gift from the Queen for her wedding day to Prince Andrew.
The tiara, from Garrad, the same designer who created Sarah Ferguson’s engagement ring, was part of a demi-parure.
A demi-parure is a set of jewellery with typically three pieces, and this one had a necklace, earrings, and a bracelet - as pictured above.