Kylie Jenner wears her sister Kendall's "old underwear".
Kylie and Kendall Jenner
The 'Keeping Up with the Kardashians' stars often squabble over clothes and the 18-year-old model says her elder sister is "mean" when it comes to lending her outfits because she will only let out the "most uncomfortable" briefs she has, rather than give her sibling the pick of her wardrobe.
Kylie said: "I let her borrow whatever she wants. She always comes through and is like, 'I need an outfit please,' and I'll let her borrow whatever.
"And then I go over there, and I'm like, 'Kendall, I need a pair of sweats to go home,' and she'll give me the most uncomfortable old underwear, the worst sweats you've ever seen and anything that's so bad and old and small. And I'm like, 'You're so mean'."
But Kendall, 20, insists all of her sisters - half-siblings Kourtney, Kim and Khloe Kardashian - are "super generous" when it comes to renting out their wares, "minus Kylie".
In a joint interview, she added to People: "Kylie and I always fight over clothes. It's a problem. It's 'cause we grew up together and we just grew up fighting over clothes."
Kendall also admitted she argues with Kylie about using her phone too much, regularly telling her sibling off for being on her mobile all the time.
She explained: "I know how annoyed I get with Kylie, for example, because she's literally constantly on her phone.
"Like, there's nothing to look at, and she can find something to look at. And I hate it so much. So whenever I catch myself doing that, I put [my phone] down immediately."
Tagged in Kim Kardashian Kylie Jenner Kendall Jenner