It's no secret their relationship has been fractured for some time now, but after witnessing the estranged pair go head to head, their half-sister Kendall Jenner has a pretty decent theory about how and why their beef started.
In the latest episode of KUWTK, the supermodel tries to explain where Kourt's anger stems from, telling Khloe and Scott Disick that she's lashing out because she hasn't processed her breakup with the father of her three children.
"I know how this happened," she said. "Honestly, I think starting with their breakup...I’m just saying, I think that situation might have mentally f*cked her. And I don’t think she dealt with it."
While a shocked Scott denied that's the reason why she's always angry, he said in his confessional: "I think Kourtney for a very long time has felt really misunderstood. A lot of people feel like she’s being rude, but I know she means well and you’ve just got to see that through her, and it’s kind of hard sometimes. But I do know that she wants to be on good terms with everybody. It just doesn’t always come out that way.
Since their awful fight hit our screens and fans of the reality series lost their sh*t at Kim and Kourtney for the way they handled the situation, Kim has confirmed she's disappointed with herself.
"It's not my proudest moment, but we were going through it, and she's made the decision to take time off now, and I think she really needs it and I think that will be so much better for her," Kim said on The Tonight Show: At Home Edition.
The matriarch spoke out about the estranged siblings' physical fight after the first trailer for the latest season dropped in February, confirming she was mortified when she watched the footage.
“I wasn’t there when they had that argument. And I have not seen them really fight like that since they were in high school,” the 64-year-old said.
“There was one time, I think it was way back when, when Kim … did anybody see when Kim beat one of the kids over the head with her purse because her rims on her car weren’t right, it was so silly.
"It took me back to that, but it made me really sad. I was like ‘You guys can’t be fighting with each other,'" she added. “That’s ridiculous, you know. Grow up."