On Sunday, Kourtney Kardashian took a break from posting mostly pictures of her kids and sisters on Instagram to post a picture of her hips laying on a towel in a black string bikini, captioned "Sunday funday!" Her haunches definitely do look like they're having fun, but it's hard to tell for sure about the rest of her body.

Sunday funday!

A post shared by Kourtney Kardashian (@kourtneykardash) on

Two weeks ago, Kardashian posted another body part on Instagram—the top of one boob including a teeny tiny bit of nipple. It was so sexy, her ex Scott Disick had no choice but to leave a really weird comment.