Kourtney Kardashian is looking great after welcoming three children with her former partner, Scott Disick.

In a photo taken in Las Vegas last weekend, the 37-year-old Keeping Up With the Kardashians star looks skinnier than ever.

"Vega$ round 2: VERSACE VERSACE VERSACE," Kardashian captioned the photo, seen below.

Days later, Kardashian shared a second photo from her trip to Sin City.

Following the birth of her third child last December, son Reign, Kardashian kicked her fitness regimen into high gear, and in recent months, her hard work has truly paid off.

In June of last year, a source spoke to Life & Style, revealing her weight loss had been accompanied by Lyfe Tea Teatox, which she reportedly drank twice a day for added weight loss.

“It clears the body of toxins and gives her energy to work out,” a source reportedly said, via OK! Magazine.

“Kourtney's never lost the baby weight this quickly before,” the report said at the time, adding that just five months after welcoming Reign she was “pretty much at her goal weight.”

Months later, after her younger sister, Kim, welcomed her second child, son Saint West, a source claimed she was looking to Kourtney Kardashian for advice.

“Since having Saint, Kim has really struggled to shift the baby weight. Now, she’s turning to Kourtney for advice,” a source revealed to Hollywood Life. “Kourtney has never looked better and has managed to slim down to a perfect size after three kids with a strict diet and tough exercise regime. Kim wants to know her secret, how often she eats and what she eats, as well as the amount of exercise, type of exercise she has to do.”

“Kim’s desperate to get back to that hour-glass figure, but needs someone like Kourtney to help her structure a strict regime of dieting and intense training,” the source added. “She’s been quite insecure about dropping the baby-weight, which was why she dropped that throwback naked selfie,”

For more Kourtney Kardashian, tune into Keeping Up With the Kardashians Season 12 on Sunday nights at 9 p.m. on the E! Network.