Queen Camilla married her go-to London-based designer Fiona Clare with one of the House of Windsor’s historic tiaras for the Diplomatic Corps reception at Windsor Castle on Tuesday night in Windsor, England.
The United Kingdom’s queen consort wore an embroidered white gown by Fiona Clare for the evening’s proceedings, featuring allover floral designs, giving the fabric an aesthetic textural appearance. The gown included slightly raised shoulders with a full skirt and plunging neckline.

Queen Camilla
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Accessorizing with a bevy of jewels, including diamond earrings and necklace, Queen Camilla’s statement piece was the historic Greville Emerald Kokoshnik tiara. The jewelry piece, which dates back to the early 20th century, was previously worn by Princess Eugenie on her wedding day in October 2018.
“On Queen Camilla, the Kokoshnik style feels deliberate,” Oliver Hobart, jewellery expert and creative director at jewelers 925E, said of the tiara in a statement.

Queen Camilla wears the Greville Emerald Kokoshnik Tiara.
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“Its clean, structured shape is very much aligned with her preference for jewelry that has presence without excess,” Hobart said. “The upright frame elongates the profile and adds definition to her overall look, something that softer, more romantic tiaras don’t achieve in quite the same way. The emeralds introduce a cool, refined depth that enhances both her colouring and the monarchy’s visual identity. It feels intentionally aligned with her public presence: calm, confident and anchored in heritage.”
Upon ascending the throne alongside husband King Charles III, Queen Camilla’s royal jewelry collection grew. The royal has her own collection of jewels, including brooches by Van Cleef & Arpels, among others, but also often wears jewelry pieces from the British royal family‘s vault and pieces that previously belonged to the late Queen Elizabeth II.

Queen Camilla
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“There is also a symbolic dimension to why she might have chosen it,” Hobart said of the piece. “The Greville collection is closely associated with the Queen Mother, a figure tied to continuity and stability within the monarchy. By wearing this particular tiara, Camilla is not only honoring that legacy but also positioning herself within that lineage. It signals respect for inherited duty, acting as a message that jewelry can convey quietly but powerfully.”