Where Kim Kardashian, Jennifer Lopez and Other Stars Work Out

USMagazine, Friday, November 18, 2011, 2:24pm (PST)

Celebs definitely flock to the basics when it comes to fitness; yoga, Pilates, and running are all popular ways for Hollywood to stay in shape. Celebs are also stepping out from behind their personal trainers to try out some of the hottest fitness classes in town. From spinning on poles to balancing on bars, check out which classes celebs are flocking to, and what famous faces you might see if you take these classes yourself!

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Barry's BootcampSelf-described as "drill sergeant tactics with a party atmosphere," celebs are going crazy for LA- and NYC-based Barry's Bootcamp (BBC) classes. (A common BBC class mixes hardcore strength training with treadmill intervals.)

Most recently, longtime client Kim Kardashian attended BBC to get in shape for her September wedding. Besides Kim, Barry counts Jessica Alba and Sandra Bullock as A-list clients.

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Tracy Anderson MethodJust about everyone in Hollywood passes through the doors of the Tracy Anderson Method studio -- our PopSugar City LA editor even spotted Molly Sims at the Studio City location! Besides Tracy's energetic dance aerobics classes, celebs, like Gwyneth Paltrow, Nicole Richie, and Jennifer Lopez, love the trainer for giving them long, lean bodies that are strong and defined minus the bulk.

Besides L.A., Tracy has studios in New York City, The Hamptons, and London. She also has a line of fitness DVDs for those who can't make it to one of her studios.

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Physique 57

Physique 57, which mixes ballet, Pilates, and isometrics, has fans in Hollywood starlets like Zooey Deschanel, Lisa Rinna, and Parker Posey. But perhaps its biggest celeb fan is Kelly Ripa: "[Physique 57] transformed my body in ways I never thought possible. I'm a short person, but I'm becoming longer and leaner. The class works your glutes, your abs, and your obliques. It's all about building muscle, then stretching it out."

If you can't make it out to LA or NYC for classes, the wildly popular workout now offers at-home fitness DVDs!

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S-FactorStars like Kate Hudson, Amy Adams, and Jennifer Love Hewitt have learned to leave their inhibitions at the door for Sheila Kelley's S-Factor workout. More than just a pole-dancing workout, S-Factor also focuses on stretching and standing movement that help women get in touch with their more sensual side. The added bonus is that you get to tone the muscles, firm the body, and increase flexibility. Look for these classes in California, NYC, Chicago, and Houston.

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Anything Barre- or Ballet-InspiredFrom Madonna's affection for Barre3 to Ginnifer Goodwin's love of Bar Method, celebs cannot get enough of ballet-inspired classes. These workouts focus on small isolated moves that help tone muscle while helping to sculpt long and lean physiques. Given the rising popularity of barre workouts, the classes are popping up just about everywhere!

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