Rooney Mara. (Vogue.)

Mara doesn’t seem to be fazed by all of the physical changes she had to undergo for her “The Girl With the Dragon Tattoo”role, including chopping off her hair and piercing her nose, lip, eyebrow and some other not-so-visible body parts. She told Vogue she was most shocked by her bleached eyebrows. “But I was fine because I knew it was going to be really helpful for getting into character.”

The slim 20-something actress also had to lose weight to play Salander. When asked by Jonathan Van Meter if the process has been unhealthy, Fincher is quick to point out that “it hasn’t been too hard for her.”

Mara even seems to revel in the film’s nudity. After Fincher receives a call that a movie poster featuring a topless Mara has leaked, she tells the magazine while smiling: “In this poster, I’m looking dead into the camera with no expression on my face. . . . I think it freaks a lot of people out.”

It seems that nudity played some role in the casting process. Fincher explained that it was part of the reason why Scarlett Johansson was passed over: “It was a great audition, I’m telling you. But the thing with Scarlett is, you can’t wait for her to take her clothes off.”

In light of Operation Hackerazzi, it seems Fincher was on to something.

Read the entire Vogue interview here.