Enjoy those rock hard abs!

Kourtney Kardashian gave us a glimpse at her perfectly sculpted midsection in a cropped sweater and black pants yesterday, and the mother-of-three must be loving that for once in her life, she's not the pregnant one in the family!

Sister Khloe just announced her pregnancy yesterday, and apparently her older sis has been giving her some pointers on motherhood.

"Kourtney Kardashian and Kim Kardashian have been giving her a lot of pregnancy tips and Khloe calls them for every little question she has. She is really relying on her sisters through this pregnancy. Kourtney always shares her health tips," a source dished to E! News.

"The whole family is especially happy for Khloe's pregnancy, and thinks that this is going to be her best year yet. They all think she deserves it, and is in a really good place in her life," the source added.

We wonder if Kourt is getting baby fever? We're sure boy toy Younes Bendjima would be happy to put a bun in her oven!