Keira Knightley has admitted she was hopeless at dancing in her new film Anna Karenina saying, "I'm an actor not a dancer!".

The actress said: "I spent hours trying to learn the moves unlike Aaron Taylor-Johnson who took minutes to pick up the choreography."

Keira jokingly added: "My dancing is jump up and down and head banging kind of stuff, I am much more into that!"

Keira Knightley plays the protagonist in Tom Stoppard's new adaptation of Leo Tolstoy's epic.

The Russian love story was directed by Joe Wright and also stars Jude Law.

Anna Karenina opens in cinemas on September 7.