"There’s a little nudity in this one... I feel like if I feel really safe and if I feel like the story calls for it then I’m not so shy. And, as for The Change-Up, I didn’t really realise that’s what was happening... People saw the movie and they’re like, ‘You know your butt’s in the movie?’ and I was like, ‘What?’ I had no idea!" Olivia Wilde on appearing naked in new films Cowboys & Aliens and The Change-Up.