FIRST LOOK: Kourtney Kardashian's Latest Photoshoot

In the latest promo for KUWTK, Kourtney strips off for a pool photo shoot.

Kylie, Khloe and Kim all hang around to watch her work it, with Khloe saying "I honestly was worried about you after Penelope. I did think, like, she's gone. Now she's yolo-ing it up, bomb ass body, naked in the pool and your sisters should be afraid of you".

Hot. FIRE!

She's a Mom of 3. We're not jealous at all...