Britney Spears and Paris Hilton are so over as BFFs -- they ditched the same fashion show in New York just to avoid each other!

Both party princesses were slated to appear at the Heatherette show at Fashion Week, but both cancelled at the last minute, says Ben Widdicombe of the New York Daily News, because they didn't want to cross paths. Britney got as far as the parking lot before deciding she didn't want to risk seeing the hotel heiress, who reportedly branded Britney "an animal" to her friends.

But there might be another explanation for Hilton's absence, according to radaronline.com, namely, a long night the night before and its aftereffects, if you know what we mean. Officially, Hilton's no-show was blamed on a stomach condition.