Rooney Mara's Red Carpet Style

For the premiere of Una, Mara chose a black leather bustier over a ruffled ivory number with a sheer black overlay, both by Louis Vuitton.

Mara dared to bare at the 2016 Academy Awards, choosing a lace long-sleeve Givenchy Haute Couture by Riccardo Tisci gown with a diamond cut-out at her stomach and a thigh-high slit.

The actress went nude at the 2016 BAFTAs in a cream-colored V-neck gown with a cut-out overlay.

Though Rooney Mara sticks to a neutral color palette on the red carpet, she always wears the most beautiful gowns. At the Golden Globes she was seen in a dusty pink lace Alexander McQueen gown with a tiered ruffle bottom.

At the SAG Awards, Mara wore an all black Valentino gown with a plunging neckline. She tied her look together with a sleek ponytail.

For the Carol premiere at the London Film Festival, Mara stunned in a romantic Alexander McQueen creation. 

Mara went for a boudoir-inspired look in head-to-toe Chanel to the house's Metiers d’Art 2015/16 show in Rome. 

The actress donned a not-so-basic little black dress by Chanel Couture for the New York Film Festival premiere of Carol. 

At the Carol photocall during Cannes, Mara wore an ivory broderie anglaise dress with a matching corset belt and nude ankle-strap sandals.

Rooney Mara dialed up the drama at the world premiere of Pan in a sheer black tiered creation laced with beadwork. A black choker and black sandals rounded out her look. 

Mara attended a Vanity Fair and Barneys New York dinner benefiting Oxfam, in a black sleeveless tunic with embellished cut-outs on each side, and matching black pants. 

Mara slipped into an ethereal gown for the Cannes Film Festival premiere of Carol.

Mara sat front row at the Calvin Klein spring/summer 2015 show in a cream sleeveless sweater dress and black ankle boots.

She selected contemporary black separates for the premiere of Trash during the Rome Film Festival, which included an off-the-shoulder crop top with sheer yoke and sleeves, and an embroidered sheer skirt.

Mara joined in on Maison Cartier’s 100th anniversary celebration of La Panthere De Cartier in a sexy-sweet LBD with peekaboo lace panels and a satin hem.

Mara paired an elegant dress by the designer with Jennifer Meyer jewelry at the Council of Fashion Designers of America.

At an Oxfam Charity Gala, Mara gave her white custom one-shoulder dress a moodier spin with slicked back hair and a vampy lip.

For the premiere of Her at the 8th International Rome Film Festival, Mara selected a sheer caped dress. 

Mara walked the red carpet at Cannes Film Festival wearing an elegant black and white look.

Mara attended the N.Y.C. premiere of her psychological thriller Side Effects in a pearl-embellished white ruffled dress.

Mara flaunted her abs in a minimalist pairing at the Ain't Them Bodies Saints premiere held at the Museum of Modern Art.

Mara dressed in all-black at the Calvin Klein after-party, opting for sexy midi-dress and ankle-strap peep-toe booties.

At the New York Film Festival closing night gala presentation of Her, the actress stepped out in a black-and-white midriff-baring number with a fitted leather bodice and pleated skirt.

Mara made the scene at the Oxfam charity gala in Dubai sporting a sculptural custom silk sheath.

"The most important thing to me is to feel comfortable," the Best Actress nominee said of her white couture Oscar gown.