You gotta read those no-parking signs!

The Hills Kristin Cavallari had some explaining to do after leaving her car parked in a no-stopping zone on Sunset Boulevard in Hollywood Monday, as the reality TV beauty emerged from lunch to find her BMW rigged up on a tow truck, ready to be hauled away.

PHOTOS: Kristin Cavallari Gets Her BMW Towed

The gorgeous blonde, clad in skintight workout pants, had some words with the officer, who let her have her car back and wrote her a ticket for the infraction.

The Hills airs on MTV Tuesdays at 10/9c.