It's a sister showdown on this Sunday's season 11 premiere of Keeping Up With the Kardashians!
The sisters are getting ready for the ESPYs when Kendall tries to borrow something of Kylie's to wear to dinner after the show.
"You're just literally the biggest f--king bitch I've ever met," Kendall says to Kylie.
"Uh, touché!" Kylie replies.
Kendall then tells Kylie's dogs, "I'm sorry your mom is such a c--t." Yikes!
Take a look at the video above to see Kendall and Kylie's explosive fight!
Watch the season 11 premiere of Keeping Up With the Kardashians this Sunday, Nov. 15 at 9 p.m., only on E!