Lotions, potions, cosmetic surgery — how do celebrities manage to stay so healthy and beautiful long after the rest of us have begun to, well, age? And "Forty is the new thirty," is so yesterday — some of the most gorgeous celebrities are in their sixties and even seventies. If you've been wondering how they do it, you're in luck: While we still haven't found an actual "fountain of youth," we did find some celebrities who were willing to share their secrets for staying fit and fabulous. (Hint: It doesn't always come from the outside.) So get ready to take notes!