'Hills' Finale Has Kristin Cavallari Looking Back On Her Biggest Regret: Kissing A Girl!

Anyone who doubted former "Laguna Beach" star Kristin Cavallari would make waves on the fifth season of "The Hills," learned quickly (during the first episode, in fact) that they were sorely wrong. Nearly getting into an altercation with Justin Bobby's ex-girlfriend Audrina Patridge, Kristin remembers that first episode as one of her top moments. "I think my biggest thing was the first episode where I really came in with a bang and it was like, 'All right, clearly I'm back,' " she told MTV News at last night's "Hills" finale party.

But with tensions running high all season between her and enemy Audrina and a shaky on-again-off-again relationship with bad boy Justin, surprisingly it's another "Hills" moment that she regrets the most. "I think that sort of my I-wish-I-didn't moment was when I made out with Stacie in Vegas," Kristin revealed. "That was one episode I had to call my dad and say, 'Dad, sorry — this is going to be your least favorite episode.'"

So what was Pop's reaction? "He was like, 'Oh, great,' and then when he called me—my parents call me after every episode just to talk about it—he didn't say one word about the episode. I don't know if that's a good thing or a bad thing... it's probably a bad thing," Kristin said with a laugh.

Did you catch "The Hills" finale last night? What was your favorite moment from the episode? And what is your favorite Kristin moment from the season?