LC vs. Kristin Cavallari

High school grudges can follow you throughout life, especially if your high school experience was documented on Laguna Beach. During season one of the series, Kristin Cavallari stole Stephen Colletti from his then-GF, Lauren Conrad. Despite graduating from high school and starting careers in Hollywood, Kristin and LC remained frenemies. But things got worse in October, when LC started dating Kristin's ex, Brody Jenner. Whether the two team up and jump Hayden Panettiere, who's dating Stephen now, remains to be seen.

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