Rooney Mara still could not shake the character of Lisbeth Salander's "Girl With The Dragon Tattoo" fashion style.

The actress, who totally transformed herself for the role, is keeping her character's style and hairdo which sparked rumors of another Fincher Millennium Trilogy adaptation. Renowned hairdresser Danilo chopped off Rooney Mara's long wavy light brown hair for her role as the punk rock computer hacker Lisbeth Salander in David Fincher's "The Girl With The Dragon Tattoo."

Mara even got her nipple pierced for authenticity and judging from her recent carpet appearances to promote the film, it does not look like she is ready to grow her hair out yet or go back to her natural color.

Rooney wore a Salander-like black blunt bangs at the London premiere while sporting an edgy Givenchy couture white cut-out gown, that if the fictional Salander had to wear a gown, she might actually like it. Mara also wore another cutting edge creation by London designer Roksanda Ilincic at the Sweden premiere which is a black pantsuit with midriff cut-outs.

Mara admits that Salander's style has strongly impacted the way she dresses in real life and she has since invested in new clothes to go with her altered appearance. Costume designer, Trish Summerville, told THR that Mara gave the initial thumbs on the Tattoo capsule collection and she was thrilled to be given the entire collection to wear.

"I used to wear a lot of girlie, frilly things," Mara says. "Now I buy things that are more comfortable, and more utilitarian, and sort of boyish," the actress added.

"My wardrobe has completely changed. It had to, partly because of my hair and partly because I stopped feeling comfortable in what I used to wear. I don't feel comfy in those clothes anymore because I have been living as Lisbeth for 14 months," Mara also told Britain's Style magazine.

It looks like that the Salander style is that hard to shake for Rooney Mara especially if there may be another Fincher adaptation of the second and third novel of Stieg Larsson.