She confirmed the two had a fight the first day of filming bonus episodes of the MTV show (it has been rumored that Cavallari has been pursuing Patridge's ex, Justin Bobby).
Patridge was mum on what went down, but told Seacrest, "When someone gets in my face, I have to defend myself. And, you guys, I mean, I can't say much. They'll show it, but I mean, all I have to say is, it's really pathetic and desperate what people will do when the cameras are around."
"It was my birthday, and I was like, Oh, my God. Is this what we're going to have to deal with?'" she added.