The 36-year-old, who has stripped off in films like '2 Days in the Valley', 'The Devils Advocate' and 'Young Adult', said a lot of it depends on the comfort level with the co-star and she has been lucky to have worked with all known people.
"It depends on who you're doing the sex scene with. I don't have issues being naked. What I mean is, I'm not hung up on my body, and I've been lucky to work with people I've been really comfortable with.
I've had maybe two occasions where it's been uncomfortable," she said. The actress will soon be seen in one of her raciest photo shoots ever in the August issue of W magazine, where she provocatively poses in lingerie with her "Prometheus" co-star Michael Fassbender.