LOS ANGELES - Don't get Katy Perry twisted: She absolutely loves being pop's quirky poster girl, the wild child who doesn't censor herself and causes raised eyebrows with songs like "Ur So Gay" and "I Kissed a Girl."

But for all her success over the last year, Perry is hoping that songs like her most recent No. 1, "Hot n Cold," show she has more to offer than kitsch and controversy.

"It's my personality, which is up and down and sassy and cheeky," says Perry, who recently became a Grammy nominee. "You're gonna see me with all kinds of different things. Maybe you won't expect it, but that's what I like to do - keep people on their toes."

Offering the unexpected was a key factor in Perry becoming one of pop's breakout stars this year. While "Ur So Gay" - a taunting song to an ex-lover more enamored with flatirons and skinny jeans than his ex-girlfriend - became an underground talker, it was her equally ear-catching song "I Kissed a Girl," about girl-on-girl experimentation, that resonated with mainstream music fans, becoming a No. 1 summer smash.