'Girl With the Dragon Tattoo's' Rooney Mara Calls 'Law & Order: SVU' Appearance 'Stupid'

The Girl With the Dragon Tattoo star Rooney Mara may have received a Golden Globe nomination for her turn as Lisbeth Salander in David Fincher's upcoming film, but there's one gig she'd like to take back.

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The 26-year-old actress, who previously starred in Fincher's The Social Network, recalled a guest appearance in a 2006 episode of Law & Order: SVU.

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"It was so awful. So stupid," Mara told Allure. "Me and my boyfriend -- although I [didn't] look old enough to have a boyfriend -- went and beat up these fat people and at the end of the show, you find out that I used to be obese and I hate fat people."

Mara admitted the role was "ridiculous." "Who would ever do that?," she said. "Who would beat someone up because they're fat?"

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The part was one of her first TV and film jobs and though the experience wasn't a particularly memorable one, it led to guest spots on Women's Murder Club and The Cleaner TV shows, and a role in Dream Boy.

Mara, who played Mark Zuckerberg's girlfriend in Social Network, believes Fincher never wanted to "hire someone well-known," she said. "He needed someone that people were unfamiliar with because it's the only way they could really believe this character. She's such a mystery."G

Girl WIth the Dragon Tattoo, co-starring Daniel Craig, hits theaters Dec. 21.