We Are The Millers, Jennifer Aniston

Now that's what we call discipline!

Jennifer Aniston revealed that she put herself on a super strict diet in preparation her role as a stripper in the upcoming flick, We're the Millers.

The 44-year-old, who appears in only a bra and underwear during one part of the film, explained how she got into her best shape yet.

"I did eat that day," she told Access Hollywood. "I was on a very, like, you know, greens and vegetables and lean proteins and kale."

So did she manage to slip in a few cheat meals here and there as a treat? No quite…

"When I really wanted to have a cheat day I had to have a kale chip," she confessed.

Yes, that's right, kale was her cheat meal! We're putting down our cupcake as we speak.

And even though the former Friends star revved up her diet for the movie, she's normally a fairly healthy eater.

In fact, just last month she detailed her regrettable experience with a Big Mac in New York Magazine.

Jennifer Aniston, Glamour

Alexei Hay/Glamour

"I'll never forget when Justin [Theroux] and I were on a road trip and we were so hungry," Aniston says. "The only thing around was McDonald's. I think I ordered a Big Mac. Wow, my body did not react well to that! It was like putting gasoline in a purified system. I am always trying to eat organic and natural foods, so that just made my stomach turn and made me feel terrible. And I think what you put in your body, as well as stress, is reflected in the quality of your skin."

Aniston has since recovered from the Big Mac blunder and offered some sage advice on how to get her gorgeous glowing skin. She dished, "I can never stress enough to my friends that they must do as I do...hydrate, hydrate, hydrate! Drink lots of water, get enough sleep, exercise, and eat a clean healthy diet, whenever possible."

Considering how amazing she looks, we're going to take her advice to heart!

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