No, Kim Kardashian wasn't hurt in a crush of paparazzi or anywhere else. It seems the star of Keeping up with the Kardashians needed an X-ray late last week for a more superficial reason: proving that her ample assets are real. The recently engaged Kardashian sometimes gets a bum rap for her big butt, which many suspect she had surgically enhanced. But leave it to her pesky little sister to show the world that Kim is au natural. Khloe Kardashian posted a pic of her sis posing beside the X-ray shot of her junk in the trunk, all of which appears to be her own. Khloe posted the pic on her Web site, saying, "Hey dolls. The PROOF is in the X-ray. Kim's ass is 100% real!!!" What a relief. Kim, the butt of the joke, tweeted, "The things my sisters have me do! Proof baby!" Kim Tweeted. Kardashian isn't the first star to debunk rumors of having augmented assets with medical intervention - in 2005, Tyra Banks had a sonogram done of her famous breasts to prove they are real.