New Delhi, Oct 15 (ANI): Cameron Diaz has revealed that she is not opposed to doing nudity as long as it's a part of the story. Cameron who wasn't afraid of showing her butt in the film 'Sex Tape,' said that people have already seen the "top" and the "bottom" of her butt, media reported. The 'Bad Teacher' star added that she will do whatever has to get done if it's the right thing.