'KUWTK' Star Kylie Jenner Admits She's Jealous Of Kourtney Kardashian's Nude Photo Shoot

Kourtney Kardashian is heating up Costa Rica in this "Keeping Up With the Kardashians" sneak peek as she strips down to her birthday suit and poses in a wet and wild photo shoot. Meanwhile, her younger sister, Kylie Jenner admits that she is jealous and wants to get into the water too.

"So you really are getting naked?" Kylie Jenner, 19, asked Kourtney Kardashian, 38 in a clip E! News shared. Kourtney, who wears a robe, responds with a "yes." Kris Jenner's daughters then engaged in a fake fight while they laugh at each other.

To help the photographer start the photo shoot, Khloé Kardashian joined her sisters outside and tells Kourtney to "focus." Kourtney proceeds to off her wardrobe with Kim Kardashian West, Khloé and Kylie all watching from the sidelines and cheering her.

When Kylie Jenner saw Kourtney Kardashian in the pool she admitted that she wants to get in the water too. "I'm so jealous," she added. Meanwhile, the photographer can't help but praise Scott's Disick's ex

Naked Kourtney flashes smiles and poses at the camera as she sits on a poolside rock and shows off her tanned and toned sexy body. There is no doubt that the mother-of-three is one hot mama.

Meanwhile, there are rumors that Scott Disick wants Kourtney back. In fact, in the past episode of "Keeping Up With the Kardashians, " he admitted that he once proposed to the mother of his three kids.

"I think I, like, asked her to marry me," Disick said in a "KUWTK" clip. "It was really weird. I don't think we told anybody actually. It was somewhat cute, and then we just got scared about, like, media and this and that. And we were like, 'Let's just put the ring aside, and we'll talk about it another day.' Never spoke about it again."

What's your take on Kourtney Kardashian's photo shoot? Is there a chance for the exes to reconcile? Drop a comment below.