Black is her security blanket!
Rooney Mara is most likely the style icon of every teenager going through a goth phase.
She certainly lived up to expectations at Cartier's 100th anniversary celebration of the Emblem La Panthere De Cartier in Brooklyn on Wednesday night!
The actress sexified her signature look in a lace-paneled Givenchy dress that looked particularly precarious in the boob area.
Double-stick tape may or may not have been involved.
We hope it was, though!
And as far as we know, no wardrobe malfunctions were reported.
Rooney also gave such a cute, mischievous grin at one point that it almost negated her dark look.
She is truly darling when she smiles!
[Image via PNP/WENN.]