The Keeping Up With The Kardashians star, 36, enjoyed a day out with Scott and their son Mason on Friday (27 November), fuelling speculation the pair are back together.
The mum-of-three was spotted with her ex and eldest child Mason arriving at the RH Contemporary Art in Beverly Hills, Los Angeles.
Some photos even showed Scott affectionately placing his arm around Kourtney's shoulders.
This closely follows Thanksgiving earlier this week, when Scott joined Kourtney and her extended family for their annual celebration.
The same day, the pair were spotted having lunch together without the kids, sparking more speculation about a possible reunion.
Scott and Kourtney split in July with his partying ways reportedly to blame.
However, their break-up is only now playing out on TV in the new series of Keeping Up With The Kardashians, filmed earlier this year.
In the most recent scenes, viewers saw Kourtney restricting Scott's access to their home after he reportedly "flaked" on her and the kids, Mason, five, Penelope, three, and Reign, 11 months.
Scott and Kourtney were together for nine years. Since their split, he has completed a stint in rehab and is said to be hoping for a reunion.
He is reportedly selling his bachelor pad in a bid to win Kourtney back and has also proposed, according to some reports.
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