Oscar-nominated actress Keira Knightley celebrated her 21st birthday in style on Sunday night (26MAR06), with a 1920s themed, tequila-fuelled party. The beauty and her Pride And Prejudice co-stars RUPERT FRIEND - now her boyfriend - and Rosamund Pike, designer Matthew Williamson and her Pirates Of The Caribbean co-star Jack Davenport partied at London nightclub Paper And Glass until 4.30am on Monday. Knightley invited 150 guests to drink over 150 bottles of Dom Perignon and Moet champagne, as well as her boyfriend's tequila cocktails and eat Beluga caviar. At midnight, Knightley was entertained by a burlesque artiste who leaped out of a giant egg and sang HAPPY BIRTHDAY.