Kourtney Kardashian is back on track. The 36-year old mom of three seems to be flaunting her "revenge body" after the public breakup with Scott Disick.

A source close to the Kardashians revealed that Kourtney already dropped 10 lbs, Hollywood Life noted.

The insider explained that the weight loss resulted after she reportedly lost her appetite since the breakup, aside from the news that her estranged ex-husband was believed to partying upon the split.

Despite such, the insider said that Kourtney felt much better and that she is ready to be in a relationship once again.

"Kourtney looks absolutely stunning with the weight loss, and is very happy about it. She's sure her new look will attract even more male admirers and can't wait for the next chapter in her life," the source continued.

Additionally, the reality star posted some of her Images on her Instagram account, International Business Times reported. Kourtney captioned the photo as "No Breaks" as she has been working out as of this moment. More than that, she proudly shared a photo of her on a two-pieced bikini on a pool side just 5 days ago.

Prior to her latest "revenge body," the oldest of the Kardashian sisters was seen wearing a glamorous red dress during her dinner with the family in St. Barts, The Daily Mail posted. The stunning red dress was paired with a simple makeover and a simple but sophisticated red handbag.

Kourtney, along with the Kardashian-Jenner clan and the reality TV crew were shooting some of the "Keeping Up With The Kardashians" scenes in St. Barts, Caribbean Island.

On the other hand, her former husband, Scott Disick might have seen Kourtney's latest changes. The Daily Mail also noted that he posted some pictures of him as well on Twitter, maybe trying to show the Kardashians that he is not missing out the fun.