RihannaAn infectious new Rihanna track, 'Who's That Chick?', leaked onto the web this afternoon. The music video, which looks like it was art directed by Lisa Frank of hyper-colored Trapper Keeper fame, represents a huge change from the pop star's darker 'Rated R' era. Clearly, the girl just wants to dance (and be covered in glitter). It's unknown whether or not this video is off of Rihanna's upcoming fifth album, 'Loud,' due in November, or if it is for an entirely different project (Rihanna appears on an upcoming album by super-producer David Guetta).

Watch and enjoy while you can after the jump; this is probably going to be yanked any minute now.