Smile! Look How Some Dental Work Changed These Celebs - 10 Best Hollywood Smile Makeovers br br It may surprise you to know that Hollywood’s biggest stars didn’t always have that million-dollar mug. Their faces are part of the product they are selling and when it comes to cosmetic dentistry, they certainly lead the way. br br We've put together this must-see list of some of your favorite celebrities before and after they had cosmetic dentistry.