04/02/2008 AT 04:30 PM EDT
Kristin Cavallari is having a little naughty fun while working overtime. The Laguna Beach
star guests in rocker Gavin DeGraw's latest video, "In Love With A Girl," which premiered Monday on MTV.com. In the clip, the reality star plays Wal-Mart-esque employee gone wild after the store closes for the night. In the upbeat clip, Cavallari's character and her boyfriend, played by DeGraw, run through the store's aisles, cavorting and filming themselves as a security guard is hot on their trail. Clips of DeGraw and his band playing the mid-tempo rocker are cut in between scenes as the twosome slip into bedding displays and smooch by the escalator.
– Brian Orloff Like this story? Click on the Yahoo Buzz! button below to Buzz it up!