The annual Diplomatic Corps reception is one of the rare opportunities when members of the royal family are able to dress up in their glittering tiaras – and the 2025 edition was no exception. For the white tie occasion, Queen Camilla donned the glittering Greville Emerald Kokoshnik Tiara, now best known as Princess Eugenie's wedding tiara. It was the first time the Queen has worn the piece.

It is one of a number of incredible pieces in Queen Camilla's tiara collection. For the South African state banquet at Buckingham Palace last year, the Queen wore the Belgian Sapphire Tiara (a flawless match for her deep blue gown). In Germany earlier this year, she sparkled in the Greville Tiara previously owned by Queen Elizabeth, the Queen Mother. Could she choose another one-of-a-kind creation f

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