Still Hot in a Bikini!

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Lisa Rinna

How does the actress (and mom of two), 46, maintain her sculpted shape? Cardio, she tells Us. "Six days a week, I run and walk, dance, do Pilates...I spin."

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Kathy Griffin

Stripping down at the GLAAD Media Awards last April, the comedienne, 48, jokingly told Us, "The internets are a-blazed! I've always had a banging bikini body and I just now decided to reveal it at 48."

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Demi Moore

At age 46, Moore still seems to wow her 15-years-younger husband, Ashton Kutcher, who told Us that as Demi matures, "she becomes more beautiful to me by the minute, and I don't know what it is. She's got the magic thing."

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Janice Dickinson

Self-proclaimed to be America's First Supermodel, Dickinson, 54, admits to Entertainment Tonight that she couldn't look this good all on her own. "I consider plastic surgery important because I'm in front of the camera," she says. "I still model, and, quite frankly, I was noticing my skin looking like a turkey wobbler. I'm just trying to hang on to what I got."

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Sheryl Crow

Mom to 2-year-old adopted son, Wyatt, Crow, 47, showed off her bod in Cabo San Lucas, Mexico, while on a New Year's Day vacation with pals Jennifer Aniston and Courteney Cox.

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Nicolette Sheridan

The former Desperate Housewives actress, 45, was white hot on a Malibu beach earlier this month.

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Jennifer Aniston

The actress, 40, has no problem showing a little more skin as she ages. "I feel more comfortable today than I ever did in my twenties or early thirties," she said in an interview with GQ. "I am more at peace in my mind and with my body."

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Elle Macpherson

Best known for her appearances in Sports Illustrated's Swimsuit Issue in the '80s and early '90s, Macpherson, 46, still maintains her bikini bod. Here, the model -- who can soon be seen on the CW's The Beautiful Life: TBL -- took a stroll at The Royal National Park in her native Sydney, Australia, in April.

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Courteney Cox

As 45-year-old actress (and mom to daughter, Coco, 3) gets older in Hollywood, she says she still has body issues. "There are huge changes in my body and my face, and I obsess over them," Cox tells Marie Claire magazine. "I just try not to have too many mirrors around."

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Julia Roberts

"The key to beauty is always to be looking at someone who loves you, really," Roberts, 41 (here on vacation in Hawaii with her family in May) told the March issue of Allure. "One of my favorite things about my children right now ... Hazel will say, 'You look pretty, Mama,' first thing in the morning."