Scarlett Johansson should know about sex appeal.

The star plays a sizzling Janet Leigh in new movie Hitchcock and says she wasn't modest about the shower scene.

"We only had the luxury to shoot the scene for a day, and everybody was feeling very nervous because it involved water and nobody wants the actor to get wet. They were concerned with modesty and all these things - but I don't care about any of that stuff and Janet Leigh never did either," she tells V Magazine. "You have got to be brave, get into the shower, and face Anthony Hopkins as Hitchcock jabbing you in the face with a 12-inch kitchen knife, you know..."

As for sex appeal, the star says, "I think all little girls are aware of their sex appeal, I think probably more so when they're pubescent. I mean I remember being an extremely flirtatious little girl. I liked boys. I think I was also inspired by certain films I watched when I was a girl. I loved Judy Garland and I loved these Rodgers and Hammerstein musicals and I had this idea of romance - the dream girl getting the dream guy - and all that stuff."

About living in Paris, where ScarJo, 27, was snapped on the street lifting up her shirt to share her new Lucky You tattoo: "I'm living and vacationing here all at once. Then I go back to New York to start preparation for a play in the fall. But I'm convinced it will be the death of me. So I'm going to spend a couple of months mourning the loss of my existence."

USA Today