Rihanna went to the "Model As Muse: Embodying Fashion" Costume Institute Gala on Monday and did everything but embody fashion. I think one too many slaps to the head from Chris Brown made her believe she was the wrong sex at the senior prom. Throughout the night, Rihanna kept walking up to ladies and going, "My dad owns a cabin in the woods. We should totally go up there after the dance and like, drink and stuff. You know you want to." Then Rihanna accidentally dropped her date rape drugs on the floor and was so embarrassed.

I've included photos from Rihanna at the 2007 Costume Institute Gala, just to show she's not always coocoo-bananas at these things.