Rooney Mara Goes for White Dress by Givenchy At 2012 Oscars (PHOTOS)

Rooney Mara added yet another modern look to her collection at the 2012 Oscars.

The actress donned a cleavage-bearing white dress by Givenchy – a stark contrast to her black-banged hair  – and confessed to E!’s Ryan Seacrest that she picked it just this morning. Talk about a last-minute decision!

Rooney is nominated tonight for Best Actress for her performance as Lisbeth Salander in The Girl With the Dragon Tattoo. This is her first nomination.

What do you think of Rooney’s look? Is it Oscar-worthy? Or too last-minute? Check it out in our gallery!