Queen Mary’s pearl-and-diamond tiara, a favourite of both Diana, Princess of Wales and now Catherine, who wore it at the Oman state banquet in October 2026. Few jewels carry more symbolism onto a banquet photograph, and the tiara anchored Kate’s Elie Saab look in a century of royal dressing — even as the evening’s viral detail gathered quietly at floor level.
(Daniel Torok/White House / Wikimedia Commons (Public domain))
Mentioned in: Kate Middleton’s Flowing Gown Gets Caught Under Chair During State Banquet