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Tonight The Queen and Members of The Royal Family welcomed the world's ambassadors to #BuckinghamPalace at the annual Diplomatic Reception. pic.twitter.com/uAejRH6qwb

— The Royal Family (@RoyalFamily) December 11, 2019

Other members of the royal family appeared in show stopping looks. Queen Elizabeth wore a gown by her longtime dresser Angela Kelly along with the Vladimir tiara, encrusted with emerald and diamond drops. The Duchess of Cornwall wore a cream embroidered gown by Bruce Oldfield and the Boucheron tiara.

The Diplomatic Reception is described by ABC News royal contributor Victoria Murphy as \"possibly the glitziest event in the royal calendar.\"

Members of the royal family mingled with 1,000 invitees, including government officials like ambassadors and high commissioners to the U.K.

The event also marks the beginning of a Christmas vacation for the royals. It is reportedly Duchess Kate's last official engagement for 2019.

Queen Elizabeth and the royal family are soon expected to head to Sandringham, the queen's country estate, for Christmas.

At least three members of the royal family though, will be missing from this year's celebrations.

Prince Harry and Meghan, the Duke and Duchess of Sussex, and their son Archie will spend this Christmas, Archie's first, with Meghan's mother, Doria Ragland.

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