We're used to seeing Katy Perry wearing very little (see recent Rolling Stone cover), but if you turn on tonight's Teen Choice Awards, you won't be as turned on.

Well, probably. Maybe that depends.

As host of the awards show, she modeled various outfits last night, channeling everything from hippies, nerds, prom queens and even her inner goth vampire.

Eat your heart out, Robert Pattinson.

Which of the "Teenage Dream" singer's TCA getups below is your favorite? Take a look at the California cutie in character below and vote in our survey ...