Jennifer Aniston may be using Smart Water as a workout partner, but her sexy ad for the sports drink could land her a new partner in life as well. The 41-year-old actress smolders the new black-and-white ad in nothing more than a sports bra and some pants. "Working out feels great ... afterwards.," the ad reads. "That's why I drink Smart. It's hydration I can feel.  (And it's one part of my routine I never sweat.)"

The former "Friends" star, who runs and practices yoga to stay in shape, recently denied using a so-called baby food diet to lose weight for her new movie. The diet, which calls for lots of pureed food, has become popular on the celebrity circuit.

"I've been asked lately, 'Jen, what's this baby food diet all about?'" Aniston told People.com. "I kept thinking, 'That's the strangest question ever.'" Aniston also denies having used Botox to fight the wrinkles (though she hasn't ruled out using the beauty regimen). She says she eats healthy diet but won't give up her coffee, wine or dairy products.