Keira Knightley smiled as she left London's Comedy Theatre last night after performing in The Children's Hour. She's got an important role as bridesmaid coming up at Easter, and this Autumn Keira might be taking on a classic part. The actress is thought to be reuniting with her Pride & Prejudice and Atonement director Joe Wright for a Tom Stoppard scripted film version of Anna Karenina. There were rumblings back in November about Keira being top of the list of actresses to play the lead role, and in a recent interview Joe revealed who he has set his sights on for the eponymous figure. The director was asked who will play Anna, to which he replied: "Not sure yet. It’s fairly obvious, but I can’t quite say. She hasn’t signed on the line yet. I’m loyal to my actors." Would you like to see Keira tackle Tolstoy?