Kristin Cavallari had all eyes on her when she made a cameo appearance at Heidi and Spencer's wedding. But during her official return to "The Hills," at a party hosted by Speidi, a catfight quickly ensued between Cavallari, Audrina Patridge and Stephanie Pratt over a guy named Justin Bobby. "Hills" fans were immediately surprised to see that Cavallari brought the drama so quickly.

But as for Kristin herself, she couldn't believe a blowout that big took place that early into the season. "The one that really stands out the most to me was the first episode that I was in ... the first episode of the season that I was on," she told MTV News after news broke that the upcoming season of the show will be the last.

"The fight that I got into with Audrina and Stephanie was so out of left field and that was the last thing that I was expecting to happen," she said about her explosive return. "And it was probably one of the biggest fights I've ever been in. So that was just the moment that really stands out the most to me."

While the now-infamous girl fight stands out to Cavallari, at the end of last season she admitted it was an equally scandalous girl kiss that left her a bit embarrassed. "I think that sort of my I-wish-I-didn't moment was when I made out with Stacie in Vegas," she explained. "That was one episode I had to call my dad and say, 'Dad, sorry — this is going to be your least favorite episode.' "

What moment from "The Hills" stands out most to you? Tell us in the comments!

"The Hills: Final Season" premieres April 27 at 10 p.m. ET/PT followed by "The City" at 10:30 p.m. ET/PT on MTV.