Report: Audrina Patridge Pulls Out of MTV VMAs

Not sure if this is true, MTV is pulling a fast one or somewhere in between, but The Hills star Audrina Patridge has reportedly pulled out of her presenting duties at this evening's MTV Video Music Awards in New York City.

The reason? She was to be presenting with Kristin Cavallari.

And she wasn't about to take part with her new fake rival.

"Audrina hates Kristin, and MTV sprung this on her at the last minute so she decided to cancel," a source dished to celeb gossip mag In Touch Weekly.

"She doesn't even want to be in the same room with Kristin."

The primary reason for the bad blood is drama - fake or real - caused by Kristin's reported dalliances with Audzo's dirtbag ex-boyfriend, Justin-Bobby.

According to reports, the stylist and hair and makeup team working with Audrina Patridge were even warned not to book a job with another Hills star.

Kristin is said to be "more than pleased" by Audrina's last-minute cancellation. Either there's a major cat fight brewing, or this is great scripted BS PR.

Says a friend of Cavallari's, who probably produces The Hills: "Kristin is happy. They never got along and Kristin is the star of The Hills, not Audrina."

Fightin' words! Whose side are you on?