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Jennifer Aniston Turns 45: Check Out Her Bikini Body

Jennifer Aniston in Cabo, Mexico on December 29, 2013
To celebrate Jennifer Aniston's 45th birthday, check out her hot recent bikini shots plus her workout and diet secrets

So this is Jennifer Aniston‘s birthday suit — at age 45!!

To celebrate our favorite “Friend” on her 45th birthday, Feb. 11, Us Weekly has rounded up a few of her best bikini shots from her recent December vacation to Cabo San Lucas, plus the superstar’s workout and diet secrets to maintaining her enviable figure.

Related: PHOTOS: More pics of Jennifer Aniston's amazing bikini bod

Aniston, toned and sexy in an itty bitty black bikini, and fiance Justin Theroux, 42, rented a home in face vacation spot Puerto Los Cabos, Mexico, so they and fellow A-list guests Courteney Cox, Howard Stern, Beth Ostrosky, Jimmy Kimmel, and Molly McNearney could relax and soak up the sun.

jennifer aniston green bikini
Jennifer Aniston shows off her hot body in a green bikini while with Justin Theroux on their New Year’s holiday in Los Cabos, Mexico.

The We’re the Millers star, here in a green bikini with Theroux, has credited yoga with keeping her insane body in shape since she began practicing with instructor Mandy Ingber. “My legs got leaner. My arms got strong,” she has said. “I’ve maybe even grown half an inch from aligning my spine.”

Related: PHOTOS: Jennifer's hair evolution

jennifer aniston purple bikini
Jennifer Aniston shows off her lean body in a purple bikini while on vacation in Cabo San Lucas with fiance Justin Theroux and friends.

While the Friends alum is clearly not shy about showing off her body (Check out those toned abs in her purple bikini!), to prepare for her stripping scene in We’re the Millers, Aniston kept a super-strict diet. “I was on a very like, you know, greens and vegetables and lean proteins and kale,” Aniston said. “When I really wanted to have a cheat day, I had to have a kale chip.”

Related: PHOTOS: Take a look back at Jennifer's Us Weekly covers

Otherwise, the bride-to-be sticks to a clean diet. “I am always trying to eat organic and natural foods,” she said. And when she indulged on a Big Mac while on a road trip with fiance Justin Theroux? “Wow, my body did not react well to that! It was like putting gasoline in a purified system.”

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