Why Is Brit So Mad???!!!!

Because we're there taking pictures of her? ... I don't think that's it ... Whatever went on inside this Beverly Hills office building this afternoon put Britney in a baaaaddd mood. Gotta love the Double-Purse technique! What's got Brit so down??? I guess her mood turned around 'cause we just saw her out at Koi tonight for dinner. Stay tuned for those pix and video!