Anne Hathaway & Alexa Chung: White Tie & Tiara Ball!

Anne Hathaway is decked out in Prada at the 2011 White Tie and Tiara Ball at Woodside on Thursday (June 23) in Windsor, England.

In association with Chopard, Sir Elton John and his partner David Furnish welcomed a glittering guest list to Old Windsor for the annual event benefiting the Elton John AIDS Foundation.

Also in attendance: Elizabeth Hurley, The Girl with the Dragon Tattoo star Noomi Rapace, and Princess Beatrice (in Elie Saab).

FYI: Alexa, who was accompanied by her brother Jamie, is wearing a vintage bag and dress, Repetto ballet pumps, and Chopard jewels (a Toi & Moi ring, a fancy-cut diamond bracelet, and a Happy Diamond teddy bear pendant. Anne finished off her look with a pair of pink drop sapphire briolette earrings and a white, yellow and pink diamond line bracelet from Chopard. Noomi suited up in a Tom Ford tux and accessorized with Charlotte Olympia shoes and a Ferragamo clutch.

10+ pictures of the White Tie & Tiara Ball…