Queen Camilla has borrowed Princess Eugenie’s special wedding accessory for an annual reception at Windsor Castle.On Tuesday, November 18, the 78-year-old queen made a stunning arrival at the castle with her husband King Charles and Prince William to attend a reception honoring members of the Diplomatic Corps, one of the largest in the world.For the event, Queen Camilla dazzled in a floor-length white satin gown with elegant silver jewlry.The queen consort elevated her gown with Greville Emerald Kokoshnik Tiara, famously worn by Princess Eugenie at her 2018 wedding.King Charles’ niece, the daughter of the former Prince Andrew and Sarah Ferguson, wore the accessory during her wedding to Jack Brooksbank at St. George’s Chapel in Windsor Castle.At the time, Eugenie borrowed the tiara from her late grandmother, Queen Elizabeth. The Tiara – which features diamonds on the band with a large emerald – was made by Boucheron for Dame Margaret Helen Greville in 1919 in the fashionable “kokoshnik” style popularized in the Russian Imperial Court.On the other hand, King Charles and the Prince of Wales also looked dapper in dark tailored tuxedo.This year’s event – which allows the royals to meet representatives of countries accredited to the Court of St. James – marks the first time since 2001 that the glitzy reception has been held at Windsor Castle.