The 27-year-old actress said that she has learned to avoid the spotlight while off-screen and is not prudish about nudity, reported Daily Mirror online.
"I'm not prudish when it comes to nudity. If the role calls for nudity, then I'm going to be naked. I'm not afraid to expose myself that way," she said.
Knightley has stripped off for roles before including 2008 film "Edge Of Love".
While she is not shy about revealing her body, the actress said that she finds it more difficult to channel personal relationships in movies.
"I'm much more worried about revealing personal sides to myself, which I find harder to do. The hardest thing to capture about love is the actual physical intimacy between two people," she added.