It's a done deal. Laguna Beach grad Kristin Cavallari is coming to The Hills.

Cavallari will indeed be starring in the MTV reality series beginning with the May 31 season finale, where she attends Spencer and Heidi's wedding - also LC's final episode - and reprising her role in 10 episodes this fall.

The 22-year-old budding actress is fully prepared to stir things up, too:

“It’s a TV show,” Kristin Cavallari explains.

“I’m not going into it like, ‘I’m going to make great friendships with these people.’ It’s work! Drama sells. I think that’s why they’re bringing me in.”

More excerpts from Kristin's interview with EW ...

On how The Hills will differ with her than with Lauren Conrad: “I’m a completely different person. I have a lot more energy. I’m more outgoing."

"I’m a little more spontaneous. And she has a boyfriend.”

On rumors of a planned romance between her  and Justin-Bobby (The Hills producers deny this): “I have no idea! [laughs] I don’t think MTV would be like, ‘Oh you’re dating him now. This is your boyfriend.'"

On why she’s coming back: “To get fans excited about me again. When I first started out, I had a celebrity name but I didn’t have the acting skills. If I have some buzz with my name again, I feel like it will only help.”

On introducing Heidi and Spencer: “It’s so funny. I was dating Brody Jenner and Spencer was Brody’s best friend. I knew Heidi when she was friends with Lauren when we were still filming Laguna Beach."

"Heidi was like, ‘Hook me up with someone. I wanna meet a guy.’ Brody and I were kinda like, ‘Well, maybe Spencer?’ We’ll see what happens.’ So we went on a double date and they hit it off right away and now they’re married.”

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.