Hollywood royalty used to use body doubles for filming sex scenes in their films; the thought of them baring it all was almost a joke. But as sex and nudity have taken a more artsy approach on screen, celebrities are jumping at the chance to take their careers to a more risqué level...

Denise Richards is currently sporting her fourth pair of breasts, after surgeons botched two boob jobs. The former Bond girl confesses she went under the knife for the first time when she was 19, in a bid to boost her profile in Hollywood. She tells radio host Howard Stern, "I was 19, and my roommate had the best boobs ever, and she had just had hers done. I was flat as a board, and I thought, 'Whoa, you can just buy them?' and stupidly had them done!"