Bodies like the ones Kim  and Khloe Kardashian boast don't come naturally; they require hard work and dedication. The Keeping Up With the Kardashians sisters displayed their commitment to fitness on Wednesday by subjecting themselves to a grueling session at Barry's Bootcamp.

In Sherman Oaks, California, which claims to provide "the best workout in the world." Advertising hype, or true fact? Click through the photo gallery and judge the results for yourself. And make sure to hit up Paparazzi-Razzi for even more pictures of your fave celebs looking fabulous.