Kristin Cavallari filming for The Hills

The newest member of the MTV reality show The Hills, Kristin Cavallari, was seen at STK restaurant, with Audrina’s ex-Justin Bobby.

Do you think Audrina can take Kristin? I guess we’ll see in the fall!

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3. Kristin Cavallari at the 2009 MTV VMA’s
4. Kristin Cavallari praises Heidi Montag’s ‘Miss Universe’ Performance
5. Audrina ‘I’m leaving The Hills’