Kate Middleton wears Princess Diana’s Lover’s Knot Tiara for the Oman state banquet

Windsor Castle was bustling this week as a a state banquet honouring Sultan Haitham bin Tarik of Oman took place on October 20. For the occasion, the Princess of Wales turned to a familiar royal heirloom. Kate Middleton paired a butter yellow Elie Saab gown that came with a dramatic cape with Queen Mary’s Lover’s Knot Tiara. Completing the look with earrings and a bracelet that belonged to Queen Elizabeth II, alongside her Royal Family Order and Royal Victorian Order insignia. Beside her, the Prince of Wales cut a sharp picture when he wore a traditional white tie and the blue sash of the Order of the Garter. 

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The Lover’s Knot Tiara is one of the British monarchy's most famed heirlooms. The diamond-and-pearl headpiece was most famously worn by the late Princess Diana. Today, the Lover’s Knot Tiara has become a signature choice for Kate at formal royal occasions since she first wore it in 2015. Over the years, she has styled it with numerous ensembles and silhouettes, allowing the historic piece to take centre stage. 

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Among her notable appearances in the tiara was the state banquet honouring French President Emmanuel Macron in July 2025. She paired the diamond-and-pearl heirloom with a dramatic dark red Givenchy gown designed by Sarah Burton, featuring a sweeping cape and a belted waist. She had completed the look with diamond chandelier earrings, a diamond bracelet and her royal sash. For the Oman state banquet, her pastel Elie Saab gown offered a softer backdrop to the tiara’s intricate diamonds and pearls.

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