Kourtney Kardashian Sympathizes With Rob After Huge Fight Over Blac Chyna: 'It Took Years For People to Like S

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Kourtney Kardashian feels her younger brother Rob's pain.

In a new clip from Sunday's brand new Keeping Up With the Kardashians, the 37-year-old reality star shows some remorse after a big fight with Rob. In a previous sneak peek, Kourtney says she confronted Rob after she was disturbed by Blac Chyna's Chymoji of a girl getting slapped that looks similar to Kylie Jenner (who is dating Tyga, the father of Chyna's first child). Rob, who is engaged to the pregnant 28-year-old model, apparently took the comments badly, threatening to slam his "disgusting family" publicly.

"Well, I know what it's like having your first baby, and people not being supportive," Kourtney tells sister Kim, who plays peacemaker between her siblings. "It took people years to like Scott."

WATCH: Kourtney Kardashian Admits She Wouldn't be Upset if 'Keeping Up With the Kardashians' Ended

Kourtney, of course, is referring to her on-again, off-again relationship with Scott Disick, the father of her three children.

Meanwhile, Kim attempts to bury the hatchet by calling Rob herself.

"I feel like this is so ridiculous, and I think we just all, like, need to get over it," she says bluntly.

WATCH: Rob Kardashian and Blac Chyna Talk Wedding, Pregnancy, and Whether They'll Give Their Baby a 'K' Name

These days, it appears to be all good between Kourtney and Rob. Rob appeared in Kourtney's Snapchat earlier this month, happily making jokes while driving her around.

Watch the video below to hear his very NSFW joke about their mother, Kris Jenner.