How would Lisbeth Salander celebrate her birthday? Maybe a new tattoo or piercing?
But we're guessing Rooney Mara isn't going to go that route on her special day (however, we're not knockin' the idea).
The Girl With the Dragon Tattoo star is 27 today.
Although Mara was featured in the epic film Social Network as the woman who inspired the whole business venture, she had her breakout performance in the adaptation of Stieg Larsson's novel, beating out many Hollywood stars for the lead role in David Fincher's film.
The actress has currently undergone a major transformation from her last character for her latest project, The Bitter Pill, about a woman who's on meds to cope with the stress from her husband's impending release from jail.
Busy, busy, right?
Hopefully she can take some time out to enjoy a little birthday love from boyfriend Charlie MacDowell.