American hitmaker Katy Perry really wants to kiss a girl, just like her U.S. number one single suggests-- and that girl is Scarlett Johansson.

The bubbly pop sensation, who is dating Gym Class Heroes frontman Travis McCoy, admits there's one female star she'd love to lock lips with.

She says, "Scarlett Johansson before she gets married (to fiance Ryan Reynolds). She is a classic beauty. I love that 1940s pin-up look."

-Katy Perry Pictures
-Scarlett Johansson Pictures

(This news article provided by World Entertainment News Network)