Scott Disick Praises Kourtney Kardashian's NSFW Pic: 'Hell Yeah, Get It Girl'

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Apparently, Scott Disick is all for Kourtney Kardashian's racy Instagram pics.

Kourtney Instagrammed a sexy selfie on Sunday, but it's not her flawless skin that had people talking -- it's that she exposed a part of her nipple in her black mesh top.

"Goodnight," the mother-of-three captioned the pic.

WATCH: EXCLUSIVE -- Scott Disick Spotted Partying Again in Mexico Following Flirtatious Night With Ex Kourtney Kardashian

Scott later commented on his ex's snapshot, writing, "Hell yeah get it girl I know 3 kids that those nips made into perfect angels."

Scott and Kourtney have three children together, 6-year-old Mason, 3-year-old Penelope, and 1-year-old Reign.

Kourtney's latest Instagram post comes after her cryptic message on Friday, when she tweeted, "A smile hides my pain, a hug masks my heartache, and a laugh covers my tears." Last Wednesday, Scott was spotted partying in Mexican nightclubs and hanging poolside with a group of bikini-clad women. On Friday night, he was seen out in Las Vegas with NFL player Johnny Manziel.

A source recently told ET that the 32-year-old reality star is "not doing well at all. He's back in a really dark place."

Scott checked into a drug and alcohol rehab center in Malibu, California, last October, and stayed for one month. He recently set the record straight about his sobriety, after pics of his vacay to Mexico hit the Internet.

"The truth is I never lied and said that I was never going to have a beer again," he told People. "I never said I was never going to have a cigarette again. I never lied and said I was never going to go to the beach again. I never lied and said I was not going to be around my friends and their girlfriends and girls and friends."

"The truth is I just want to live my life and I want to have a little happiness and a little balance," he added. "The truth is rehab did help me and now I'm just trying to be responsible. I'm not out here trying to get wasted, but you know what, I will have a beer on the beach. I'm not doing drugs, I'm not doing anything insane, so I think people just need to relax … I just want to try to live my life."

He also stressed that he and Kourtney were "not together."

"I'm not sure I can stay home every single night at 32 years old and be sane," he mused. "In the end, I'm trying to live my life. I'm trying to live it healthy. I'm trying to be there for the people I love, which is Kourtney and kids, but you know what, we're not together."

WATCH: Kourtney Kardashian and Scott Disick Have a 'Flirtatious' Night Out Together at Kanye West Club Appearance

Watch the video below for more on Scott's night out with 23-year-old Manziel.