Katy Perry is a good girl AND a bad girl

Katy Perry is both a good girl and a bad girl.

The singer, who is married to bad boy Russell Brand, is good deep down, but knows how to be bad.

“I’m a good girl because I really believe in love, integrity, and respect,” she dells the December issue of Harper’s Bazaar.

“I’m a bad girl because I like to tease. I know that I have sex appeal in my deck of cards. But I like to get people thinking. That’s what the stories in my music do.”

“People don’t want just vanilla. They want 31 flavors.”

“I couldn’t do what Rihanna does. I couldn’t do what Lady GaGa does. They can’t do what I do.”