The rumoured rift between Hills' BFFs Lauren Conrad and Audrina Patridge has erupted into a full-scale bust-up over a photoshoot.

LC reportedly threw a tantrum (complete with stomping, according to TMZ) when she found her housemate in the midst of a photoshoot with OK! magazine in their backyard.

Apparently LC had already promised exclusive pics of their hallowed turf to a rival mag.

Audrina has since gone public with her side of the story.

"She was very, very, very mad," old shark-eyes explains to OK!. "She said it’s her house. But this is my room. I said, 'We’re not taking pictures of your house - don’t be rude.' It just adds to the tension.

“Now she thinks I’m sneaky and shady for doing this photo shoot, yet she and her team knew about it. She won’t let it go."

Audrina had gotten the go ahead for the shoot from LC's rep, who had neglected to mention it to her client, reports TMZ.