Fight Night with Nicky and Bijou?

It’s so hard to keep up with the feuding that goes on in Young Hollywood these days.

Case in point-Nicky Hilton and Bijou Phillips.

What's the latest on those two?

At last night’s opening of the Intermix boutique on Robertson Boulevard, Phillips apparently wasn’t too keen on hanging with the hotel heiress.

A source tells me a television reporter asked Hilton and Phillips to do an interview together. Phillips turned him down with a grimace. She shook her head and said, "Nope. Those are the rules," reports an onlooker.

Fortunately, it didn’t spoil the evening. They both headed inside for the bash, where E! Online’s Hollywood Party Girl reports she saw the ladies actually hanging out and chatting it up.

Is there a feud simmering, or are there some new red carpet rules I don't know about? Whatever.