Bitter Fan: It's Britney, "Bitch!"

8/20/2008 12:06 PM PDT BY TMZ STAFF
Not everybody likes the new low-key Britney Spears -- especially her obnoxiously demanding fan base.

A few gals were pissed after Brit refused to pose for a photo for them -- while waiting in traffic! Though hearing one of the 'em scream, "Why's she being such a bitch?" probably didn't help their cause.