Kourtney shows off her back in her Mexico vacation

Kourtney Kardashian might not be baring it all, but she's pretty close to it. The 38-year-old entrepreneur posted Instagram photos showing her sexy backside while on vacation in Mexico with boyfriend, Younes Bendjima, who is 24.

The mother-of-three looked incredible as she kicked back and relaxed in the tropical setting.

The Armenian beauty also flashed a lot of leg by stretching it out over a bar stool and showing its definition.