Actress Jessica Biel and singer Justin Timberlake attend the Costume Institute Gala Benefit to celebrate the opening of the "American Woman: Fashioning a National Identity" exhibition at The Metropolitan Museum of Art on May 3, 2010 in New York City.
( - Source: Stephen Lovekin/Getty Images North America)
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Jessica Biel channeled old Hollywood glamour in a champagne-colored silk charmeuse gown by Ralph Lauren. The actress paired her sultry frock with a loose, undone updo and a subtle pink lip. She also had the night's ultimate accessory: beau Justin Timberlake.