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'The Hills' Stars: Then and Now

As the reality hit's final season comes to a close, we look at the evolution of Heidi, LC, Audrina and the rest of the cast (11 Photos)

Ali Gray on Apr 25, 2010 at 10:47PM

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Jason Merritt/FilmMagic; Denise Truscello/WireImage

Kristin Cavallari

When 16-year-old Kristin Cavallari (pictured left in 2004, and right in April 2010) appeared on Laguna Beach, she already had her "mean girl" act down pat. And when she joined The Hills for season 5 (following Lauren's departure), MTV busted out the tagline, "The Bitch Is Back." And she didn't disappoint! The blond seductress continued her conniving ways, but as the show's new narrator, audiences got to see that Kristin wasn't all bad -- and she even got her heart broken by the non-showering Justin Bobby (after she stole him from Audrina, of course).