On Friday evening, British model, actress and daughter of Gerry Hall and Mick Jagger, Georgia May Jagger celebrated her 21st birthday. Instead of having hum-drum drinks and cake, the beauty invited her fun and famous friends, like Cara Delevingne and Mark Ronson, over to the Lounge Lover Club in Shoreditch for a costume-themed soiree. See some of the sexy Instagram photos here!