The always-radiant Cameron Diaz is known for her no-holds-barred attitude and gorgeous natural beauty. The star of Knight and Day with Tom Cruise, shared with British Vogue what gets her glowing. She says the secret to maintaining her youthful radiance is taking care of herself and having fun! "I don't want to look 25 again. The fountain of youth for me…is exercise, a healthy diet, lots of water, lots of laughter, and lots of sex — it's healthy, it's natural, it's what we are here to do!" Now there's a beauty plan that's simple and affordable!