With her numerous reality TV shows and numerous public appearances we're curious how Kim Kardashian keeps her famous figure in shape.

The answer? Barry's Bootcamp. Each hour long class combines 30 minutes of cardio and 30 minutes of strength training but instructors can mix up the routines to help lose weight and develop muscle.

It's a routine that'll get any butt -- even Kim Kardashian's -- whipped into shape. The reality starlet emerged from the Sherman Oaks studio yesterday looking worn out from her workout. Check out all the photos below:

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Kim's been a longtime attendee of Barry's Bootcamp. Other celebrities who swear by Barry's include Teri Hatcher and Jake Gyllenhaal.

One star who's not a fan? Kim's mom Kris Jenner. Watch what happened when the Kardashian matriarch attended one of Barry's intense sessions:

Barry's Bootcamp - Keeping up with the Kardashian's

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