BOOTYLICIOUS: Kim Kardashian Shows Off Backside (PHOTO)

Popular rapper, Kanye West's baby mama/fiancee, Kim kardashian posted photos of her and her BFF, urban model and former stripper, Blac Chyna flaunting their backside on her instagram page.

The reality star, Kim Kardashian and her BFF, Blac Chyna (who is rapper Tyga's baby mama) obviously have something in common