Catfights & Fistfights: Reality TV's Biggest Battles

Audrina vs. Lo! Diddy vs. Aubrey! From flying cranberry juice to flying fists, see how ugly things got on your favorite shows. By Serena Kappes

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AUDRINA VS. LO

In the season 4 premiere of The Hills, Audrina and Lo finally put their long-simmering tension on the table. While Lo insisted she'd been unfairly blamed "for the reason you and Lauren are drifting apart," a cool Audrina told her, "I have friends that treat me good and I feel included, and you don't do that. But I just don't care. We'll never be friends." There's always next season to bond!