why didn't Audrey Dawns show nudity in this?

she played after all a porn website model. but every time you see her she is wearing lingerie. so, I'm supposed to believe that she got famous for just wearing lingerie? and how come she never showed nudity while in bed with Luke Wilson's character? I understand they were trying to separate her from all the other girls who showed nudity in this and were trying to make her seem more special than them by having her not show any nudity but that should of ended after the first 2 scenes of her with Luke Wilson. after that she should've and needed to show her boobs. she was supposed to be hot and an porn internet model!!! come on. you have to show her boobs in order for her to be her part. she should've shown her boobs in bed with Luke Wilson's character while having sex with him.