Popstar Katy Perry said that if she ever gets a chance to lock lips with a girl, she would do it with actress Natalie Portman.

The 25-year-old singer has a crush on the'Other Boleyn Girl'star and thinks it would be incredible to kiss her, FemaleFirst reported online.

"I used to want to kiss Megan Fox, but now she's married and I'm not so sure about that anymore. Probably Natalie Portman now -she's hot and smart,"Perry said.

However, the'I Kissed A Girl'admits she is not too comfortable with the thought of posing naked for a men's magazine like Playboy.

"I think I would probably say no because that's like showing all your cards and I always want to keep a couple of aces up my sleeve and, plus, I think there's a fine line between being a tease and just giving it away. I like to be considered more of a tease, so unfortunately guys you're never going to get it,"Perry said.