The latest trailer for Keeping Up With The Kardashians reveals a savage argument in which Kim says sister Kourtney is "the least exciting to look at" out of all her siblings.
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The spat starts over a scheduling conflict for a photo shoot Kim is organizing, with Kourtney announcing she'll be leaving at 4pm and "doesn't care what anyone says".
This instantly incites a fiery rage from Kim, who claims Kourtney should have never been involved in the first place.
"No one wants you in the f**king shoot, get the f**k out of here and go!" she shouts.
When Kourtney replies that she had already said she didn't want to participate, Kim hits back:
"Good, then don't be in it! Shut the f**k up!" before continuing to order her sister to leave.
Of course, it wasn't long before mom-ager Kris Jenner attempted to mediate the escalating argument.
"You are annoying, Kourtney," she adds, rather unhelpfully.
The suggestion that Kim might look at reshuffling her schedule in order to accommodate her older sister did not go down well, either.
"Who has the busier schedule?!" she yells.
"Maybe if you had a f**king business that you were passionate about... but you don't, so don't even act like you know what I'm talking about."
Khloe Kardashian appears, but does little to help the proceedings, so Kourtney takes Kim's 'advice' and makes a swift exit - although Kim wasn't quite done yet.
"I need Kourtney to not be so f**king annoying with a stick up her ass like she f**king runs this shit, because she doesn't," the reality star says.
"She's the least exciting to look at, so she can be out."
It's not the first time Kourtney's appearance has come under fire from her nearest and dearest.
She recently copped some heat from her own boyfriend, who shaded her for showing too much skin "to get likes" on Instagram.