Oscars 2011: Role to Red Carpet

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Natalie Portman, Black Swan

To play ballerina Nina Sayers in Black Swan, Natalie Portman danced between stretchy jersey dancewear and spectacular Rodarte tutus. For her red carpet appearances, the actress drapes her burgeoning baby bump in luscious satin gowns like this pink Viktor & Rolf design.

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Nicole Kidman, Rabbit Hole

In Rabbit Hole, Nicole Kidman played Becca Corbett, a practical, cardigan-wearing stay-at-home mother grieving the death of son Danny. In real life, the statuesque mother of two chooses sleek custom designs like this single-shoulder gown from Prada.

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Michelle Williams, Blue Valentine

To play unhappy-at-home pre-med student Cindy Heller, Michelle Williams bundled up in ultra-'90s flannels. In real life, the actress complements her platinum pixie with mod designs like a crisp scallop-hem Balenciaga.

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Melissa Leo, The Fighter

The actress played Boston matriarch and manager Alice Ward in big hair and flashy separates. For her real-life red carpet excursions, she forgoes the flash in timeless column gowns like her sequined Marc Bouwer.

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Mark Ruffalo, The Kids Are All Right

The actor unbuttoned for his role as bohemian sperm donor Paul Hatfield in The Kids Are All Right. Offscreen, well, let's just say Mark Ruffalo cleans up wonderfully in classic tuxedos.

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Jeremy Renner, The Town

From tracksuit to tuxedo! As criminal mind James "Jem" Coughlin, Renner rocked matching (and oddly menacing) warmup gear. In real life, the actor wears flawlessly tailored suits like this navy blue number from Dolce & Gabbana.

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Jennifer Lawrence, Winter's Bone

In Winter's Bone, Jennifer Lawrence's tomboy layers and fatigue jacket convey her character's hardscrabble life and desire to enter the military. In real life, the actress shows her fashion daring (and her legs) in edgy gowns like this ruffled Louis Vuitton number.

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Jesse Eisenberg, The Social Network

Jesse Eisenberg donned an array of hoodies to play Facebook founder (and Harvard undergrad) Mark Zuckerberg. On his own time, Eisenberg goes grownup in fanpage-worthy two-button tuxes, like this one from Dolce & Gabbana.

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Jeff Bridges, True Grit

Bridges copped some serious swagger as one-eyed Civil War vet Rooster Cogburn. In real life, the Hollywood original goes non-traditional in a gray suit sans tie.

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Javier Bardem, Biutiful

In Biutiful, Javier Bardem played a terminally-ill father with more on his mind than what to wear. In real life, Bardem opens up in offbeat ensembles like a three-piece suit worn with an open-neck shirt.

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James Franco, 127 Hours

The actor battled the elements in a sunflower tee as crunchy mountaineer Aron Ralston. The multi-talented Franco makes his far less perilous visits to the red carpet in hot looks like this all-black ensemble.

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Hailee Steinfeld, True Grit

As Mattie Ross, Hailee Steinfeld sat tall in her saddle in an oversize coat that symbolized her character's big quest. In real life, the young actress makes fun, fashion-forward choices like this fruit-striped custom Prada gown.

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Geoffrey Rush, The King's Speech

In The King's Speech, Geoffrey Rush played Lionel Logue, an Australian speech therapist in pre-WWII tweeds. In real life, Rush has a style all his own, choosing unexpected accessories for his dapper suits.

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Colin Firth, The King's Speech

The actor played well-decorated military man (and future monarch) Prince Albert in The King's Speech. For his forays down the red carpet, Firth trades in his character's ribbons and medals for streamlined suits.

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Helena Bonham Carter, The King's Speech

As the would-be Queen Elizabeth, Helena Bonham Carter was the picture of propriety in hats and furs. Off the big screen, the actress favors dramatic, frilled dresses (like this lace number from Marc Jacobs) and whimsical accessories like hats, quirky evening bags and even mismatched shoes.

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Christian Bale, The Fighter

As former boxer Dick "Dicky" Eklund, Christian Bale hung his lanky frame with baggy T-shirts and trousers. In real life, a back-to-fighting-weight Bale is a knockout in slouchy suits.

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Annette Bening, The Kids Are All Right

In The Kids Are All Right, Annette Bening played Nic, a no-fuss, no-muss obstetrician with a partner and two kids. In real life, the acting legend plays up her sleek shape in elegant gowns like this one from Tony Ward Couture.

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Amy Adams, The Fighter

As fiery Charlene Fleming, Amy Adams tended bar (and her boxer boyfriend) in down-to-there tanks and tiny skirts. In real life, Adams walks the red carpet in Old Hollywood-inspired gowns like this navy Marchesa.