The Keeping Up With The Kardashians star was seen in LA on Tuesday (7 July) filming scenes for the E! reality show with pregnant sister Kim.
Kourtney, 36, has kept silent so far on claims she has dumped long-time boyfriend Scott, the father of her three young children.
It's alleged the final straw for Kourtney was seeing photographs of Scott looking cosy with another woman during a holiday in Monte Carlo, while Kourtney and the kids were back home in LA.
Kourtney and Scott, 32, had been together for nine years.
The ups and downs of their relationship were frequently documented on Keeping Up With The Kardashians, including Scott's struggles with partying and alcohol.
Scott entered rehab in Costa Rica earlier this year but left after one week, saying he had business commitments and had always intended to stay one week and then go back.
He told People.com: "It helped my dramatically to see some of the things that have troubled me in the past, but I'm not done. I plan to go back and I hope it helps me even more to get to a point where I'm fully cured of some of things that I struggle with."
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