Since when did K. Stew become such a sourpuss?!

Kristen Stewart returned to Los Angeles with girlfriend Alicia Cargile on Friday night, and after the two spent New Year's Eve together in Hawaii you'd think they'd be in a good mood, but that was clearly not the case. First the actress totally dissed an autograph seeker, and then she and Alicia stopped an old man from getting in the elevator with them at LAX!

He was clearly not a photographer, and when the paps told him who he had just dissed him, he didn't seem to know who she was but he did say that she was "rude!" K. Stew was also asked whether she was still in love with former boyfriend Rob Pattinson, so maybe that's what set her off?

Is it just us, or is Alicia a little TOO protective of her lady friend?


Click thru to see the former Twilight starlet diss her fans too: