The Biggest Celebrity Feuds That We Haven't Let Go Of Yet

Heidi Montag & Lauren Conrad

"You know what you did!" was the iconic shout heard round the reality TV world. "The Hills" co-stars can trace their feud back to when Montag started dating her now-husband Spencer Pratt. When rumors started flying that Conrad had a sex tape floating around, she blamed Pratt and Montag for starting them.

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Post originally appeared on Upbeat News.