( CM ) - Actress JENNIFER ANISTON is so uncomfortable stripping for movie cameras, she orders cast and crew members not involved in the scene to leave the set. The former Friends star shed her clothes in romantic comedy The Break-Up in 2006, but was wracked with nerves throughout the sexy scene - even though she was acting opposite her then-lover Vince Vaughn. However, Aniston is quick to point out she's very happy with the body she was born with - she just doesn't want strangers staring at it. The 39-year-old says, "Although I'm happy in my own skin, I'm not comfortable doing nude scenes. On my movie (The Break-Up) we had a closed set, but it was still very hard."