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The Best Actress nominee for Volver goes for all-out drama in an elaborate blush Atelier Versace gown with a sweeping train, and topped with a Swarovski clutch and Chopard diamonds.
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The Best Supporting Actress nominee is a vision in a shimmering silver crystal-mesh Giorgio Armani Privé gown, topped with a tulle beaded floral overlay and Lorraine Schwartz diamonds.
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Last year's Best Actress winner – who's presenting this year – is sleeker and sexier than ever in a strapless, tiered Nina Ricci gown, a 38 carat Van Cleef and Arpels diamond bracelet and long straight locks.
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The presenter channels '60s-era glamour girls in her crystal-encrusted lilac silk Marchesa gown, Lorraine Schwartz diamond earrings and pinned-up curls.
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Nominated for Best Actress for Little Children, the actress is effortlessly glam in a pale green, one-shouldered Valentino gown, set off by Chopard yellow diamonds and 18-karat gold Bulgari clutch.
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The Oscar winner, who presented this year, lets her hair down with flowing straight locks – and a sizzling apricot tulle-and-chiffon Zac Posen gown.
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Last year's Best Supporting Actress winner is the epitome of elegance in a platinum satin Vera Wang gown, accessorized with a softly curled updo and a dazzling diamond vintage Cartier pendant.
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All hail The Queen! The Best Actress winner blooms in a floral print Christian Lacroix gown topped with embroidered lace, the Lana Marks Cleopatra clutch and, in back, a jaw-dropping 62-carat Chopard diamond brooch.
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The presenter described her raspberry Oscar de la Renta gown as "comfortable and chic"– we'd say simply stunning is more like it.
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Fresh off a beach vacation, the presenter glows in an off-the-shoulder white satin Valentino gown and a whopping $2.9 million worth of Cartier jewelry.
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Before performing during the show, the Dreamgirl rocks the red carpet in a crystal-adorned one-strap Armani Privé gown and Lorraine Schwartz jewels.
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The presenter shows off her post-baby body in a crystal-embroidered navy Proenza Schouler gown with a one-strap neckline and feather-trimmed hem.
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Putting aside her riskier fashion choices, the Best Supporting Actress nominee goes for old Hollywood glamour in a black sequined fishtail gown with Chanel Haute Couture and Chanel jewels.
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Supporting her fiancé, Sacha Baron Cohen (a.k.a. Borat), the actress sets off her red hair with an emerald green satin corset gown from Monique Lhuillier's fall collection and a Lauren Merkin clutch.
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JADA PINKETT SMITH
While Best Actor nominee husband Will and son Jaden presented, the actress is content to steal the show on the red carpet in a yellow Carolina Herrera gown and H.Stern jewels.
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The presenter glows in a buttercup-yellow Escada gown, dazzling Chopard diamonds and retro waves.
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The actress must have paid close attention on the set of The Devil Wears Prada: The presenter looks simply stunning in an inky-blue sequined Calvin Klein gown, Lana Marks clutch and H.Stern jewels.
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NICOLE KIDMAN: YOU DECIDE
Ever the risk-taker, the presenter tops off her slim crimson silk crepe Balenciaga column dress with an oversized bow and a custom L'Wren Scott diamond bracelet.
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JENNIFER HUDSON: YOU DECIDE
The Best Supporting Actress winner goes for the gold with her python cropped jacket over an Oscar de la Renta chocolate chiffon gown and Fred Leighton diamonds.