Kristin Cavallari is definitely making friends and enemies on her first season of "The Hills." Her feud with Audrina Patridge has been well-documented, but as for Cavallari's recent claim that she's friends with everyone but Patridge, well, Stephanie Pratt is still waiting for that bond to form.

"I did sleep over. I'm trying," Pratt told MTV News. "I think we'd have a lot of fun together."

Spencer's sister isn't sure that her friendship attempts are going so well, due to Cavallari's romance with Audrina's ex. "If she's going in the direction she's going, which is a non-Justin Bobby direction, it's great, because maybe Audrina can somehow work it out," she said. "But if she's going in that direction, that means she's possibly gonna be dating someone that I don't like, and that'll be hard."

Someone might want to send that memo to Cavallari, who seems to think things are going quite well for her and the rest of the cast. "I'm friends with everyone — except for Audrina," she told MTV News. She also dished about the new "Hills" commercials that tout, "The bitch is back." "I think it's funny," she laughed. "Honestly, I think it's fun to play the bad girl, and no one remembers the nice girl, you know?"

In the trailer, Audrina Patridge says former co-star Lauren Conrad shared some words of wisdom about Cavallari. "Lauren basically told us she's a man-eater. She's a boyfriend stealer," Audrina said. "These are people's lives that she's messing with. People do have hearts and feelings."

To see how Kristin fits in, check out new episodes of "The Hills," starting Tuesday at 10 p.m. ET on MTV.