What Sparked a Fist Fight Between Kourtney and Kim Kardashian?

Dimitrios Kambouris/Getty Images via People

Kim Kardashian West ticked off older sister Kourtney Kardashian one too many times.

Though the Kardashian-Jenner clan is notoriously close, these two duked it out with an actual physical fight — punches and slaps included.

Kim Managed to Push Kourtney Over the Edge

In the Keeping Up With the Kardashians season 18 premiere that aired last night, the two sisters went from an argument straight into a physical altercation. But what managed to push Kourtney over the edge?

Related: See Why Kim and Kourtney Kardashian Got in a Fist Fight

Apparently, Kim K. just doesn’t think some of her sisters work as hard as she does.

After a rocky season 17, Kourtney decided to stay on the show after previously stating, “I honestly don’t want to film like, ever again.”

Kourtney and Kim have been at each others throats over work ethic. It’s clearly been building tension between the two, and Khloé has now been joining Kim’s side.

The three sat down so that Kim and Khloé could confront Kourtney about her “negativity” and “bad vibes.” It didn’t really solve anything. Kourtney begged, “Let’s just move on,” as Khloé called her an “a**hole.” Ouch.

Tensions exploded during a discussion over Kylie bailing out on her obligations at the Balmain show at Paris Fashion Week. Kim K. brought up how Kylie was unable to walk in the show due to sickness.

Kourtney and Kendall Are Over Kim’s Work Ethic Assumptions

Kim noted that she would have still done the show, even if she were on her “death bed” — insinuating that her sisters wouldn’t do the same. Kendall and Kourtney weren’t having it.

“I will literally come at you right now,” Kendall retorted. “I’ve been sick as f***, having major panic attacks, I work my f***ing a** off whether I’m sick or not.”

Kim started to talk, saying, “You don’t care about stuff if it’s a Saturday…” but Kourtney shut her down.

“You act like I don’t do sh*t. You have this f***ing narrative in your mind,” Kourtney snapped. “I will literally f*** you up if you mention it again.” She then told her sister to “change the narrative” in her mind, because Kourtney works just as hard.

Kim responded to her sister’s anger by laughing, so Kourtney threw a water bottle at her.

Don’t ever come at me like that,” a shocked Kim warned her sister. “I swear to god, I’ll punch you in your face.”

Khloe tried to diffuse the situation, but it quickly devolved. Amid ongoing insults, the two sisters exchanged blows. Punches, scratching, and even a few slaps flew.

Kim Kardashian and Kourtney in a physical fight
‘Keeping Up With the Kardashians’ via E!

It’s unclear what will happen between these two feuding sisters. Will they be able to repair their once-close relationship? Or will they need to get the family lawyer involved?