Kim and Kourtney Kardashian are very generous older sisters.

The 'Kourtney & Kim Take Miami' stars and their sister Khloe, 28, have been praised by their younger half-sisters Kendall, 17, and Kylie Jenner, 15, for frequently letting them wear items from their bulging designer closets.

Kylie told Ryan Seacrest on his KIIS FM radio show on Tuesday (12.02.13): ''I think that's the majority of fights sisters get into but our older sisters are so generous. I'm surprised. They let us borrow pretty much anything.''

The teen models, who are regularly spotted wearing the latest designer clothes and accessories, also revealed that they are much more private than most of their friends because they are often worried about what people will think about them.

Kendall said: ''I feel like when you're in front of the cameras, you're a little more cautious about everything and there's not a lot of room for mistakes. We're much more private internet wise. We're way more cautious about what we say and what we do than we would be otherwise.''

Kylie admitted that she is also much more cautious when it comes to making new friends because of her growing fame.

She said: ''It's kind of a disadvantage too. You don't know who wants to be friends with you, you don't know the reasons. We got lucky, we have a lot of friends that we've been friends with since kindergarten, since before everything.''

The girls have partnered with PacSun to create an affordable young women's line that is available online and in stores now.