Kourtney Kardashian flashed her toned tummy as she attended the 13th birthday party of her first born son Mason Disick on Saturday night.
The reality star, 43, awkwardly reunited with her ex-boyfriend Scott Disick, 39, at the party. The former couple share three children together, Mason, 13, Penelope, 10 and eight-year-old Reign.
The whole family got together to celebrate Mason's birthday, including sisters Kim and Khloe Kardashian, Kendall and Kylie Jenner, and momager Kris Jenner.
Kourtney opted for a sexy black ensemble for the event, with her showing off her toned physique with her midriff on full display. She flashed her cleavage in a plunging blouse with a cut out panel to reveal her abs - the shirt wrapped around her with a crisscross pattern made up of draping pattern.
Kourtney tied the look together with bell-bottom trousers and a sweet heart-shaped handbag with a short, thin strap.
Scott went for a more subdued look going for loose black trousers that he paired with a black jacket.
The exes recently made headlines when Scott confessed he will 'always have regrets' for how he treated his ex, who married Travis Barker earlier this year.
Scott and Kourtney first started dating in 2006 and proceeded to have an on-and-off relationship for almost 10 years before splitting for good in 2015.
Kourtney has said that Scott's sobriety battles and substance abuse problems were the reason for their split. Kris Jenner has insisted that Scott will always be a part of the family.
An insider revealed that Scott has regrets for how he treated Kourtney during their relationship.
Speaking about his relationship with Kourtney, an insider said: "Scott will always have regrets about how he treated Kourtney and handled their relationship."
"He is focusing on moving on, accepting his faults, and trying to learn from his mistakes," they told Entertainment Tonight.
Kourtney has since went on to marry Blink182 drummer Travis Barker with the two gaining a reputation for flaunting their public displays of affection.
Scott is said to be happy for his ex, and the source has said that while the father-of-three isn't in a rush he would like to get married one day.
They added: "The Kardashians still talk to him almost all the time and they see each other relatively frequently. It isn't a toxic situation for anyone in the family."
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