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Oscars' 12 best dressed stars

  • Performer Gwyneth Paltrow rocked a high-octane, low-cut platinum sheath
  • Helena Bonham Carter collaborated with "Alice in Wonderland" designer Colleen Atwood
  • Anne Hathaway was stunning in each of her several costume changes

( -- Hot -- and hysterical -- hosts James Franco and Anne Hathaway would have completely stolen the show at the 2011 Academy Awards were it not for these sartorial standouts. This year's red carpet was packed with every facet of glamour -- from body conscious styles and gorgeous shades of red to crystal-sprayed gowns and ethereal tulle. Presenting InStyle's decked-out dozen.

Cate Blanchett

Presenter Cate Blanchett wore an intricately embellished silk chiffon Givenchy Couture gown in wisteria with Van Cleef & Arpels jewels including a tassel diamond bracelet and yellow and white diamond earrings.

Michelle Williams

The always sophisticated nominee chose a short-sleeve Chanel column gown in sparkling winter white.

See more of the best dressed stars at the Oscars

Helena Bonham Carter

The Best Supporting Actress nominee collaborated with her "Alice in Wonderland" costume designer, Colleen Atwood, to celebrate "film rather than fashion." The result: an 1880s-inspired black velvet gown that she paired with a fan-shaped clutch.

Helen Mirren

Helen Mirren looked statuesque in a strong-shouldered silver gown that she accented with platform heels, a satin clutch and Cartier diamonds. The 10 best hair and makeup looks at the Oscars

Jennifer Lawrence

Jennifer Lawrence's red-hot Calvin Klein Collection gown required minimal accessories -- the first-time nominee kept the look simple with a Chopard bangle and studs.

Jennifer Hudson

Newly svelte presenter Jennifer Hudson turned heads in a curve-accentuating tangerine Atelier Versace design.

Gwyneth Paltrow

Performer Gwyneth Paltrow rocked a high-octane, low-cut platinum sheath from Calvin Klein Collection Best Oscar jewelry

Halle Berry

Halle Berry was the picture of femininity in a crystal-encrusted Marchesa corset gown with silk tulle ruffles.

Mila Kunis

Presenter Mila Kunis made a stunning entrance in a romantic lavender Elie Saab confection paired with a loose chignon and loads of diamonds. Top Oscars fashion trends

Hailee Steinfeld

Working with Marchesa designers Georgina Chapman and Keren Craig, Hailee Steinfeld dreamed up a ballet-pink hand-embroidered tulle gown, which she accessorized with a headband of diamonds.

Reese Witherspoon

Newly engaged presenter Reese Witherspoon looked '60s chic in a classic Giorgio Armani Prive black and white gown.

Anne Hathaway

From walking the red carpet in vintage Valentino to shimmying onstage in this silver, fringed Oscar de la Renta -- Anne Hathaway was stunning in each of her several costume changes.

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