Look out for the claws on these resident mean girls of reality TV
Lauren Conrad and Kristin Cavallari, Laguna Beach
Before she began pulling out her claws on The Hills, she got practice fighting with the one-year-younger Cavallari. They were never friends, as Cavallari was dating Conrad's long-time childhood friend Stephen Colletti. When they broke up, Cavallari then dated Conrad's sometimes love interest, Brody Jenner.
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