W magazine fashion market editor Treena Lombardo reminds at-home fashion followers not to take trends from the red carpet too seriously. ''I don't think any of the trends the Oscars hit are trends the rest of the world needs to know about,'' she said.

She did notice all that red, though. ''Heidi Klum was the most beautiful I've ever seen her,'' Lombardo said. ''Amy Ryan was the opposite. She was very minimal and very chic, an exact 180 from what Heidi was doing.''

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Klum's full-volume gown was by John Galliano. It is being auctioned as part of The Heart Truth campaign to raise awareness about women and heart disease. Ryan's one-shoulder, midnight-blue dress was custom-made by Francisco Costa for Calvin Klein.

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One-shoulder gowns were another popular look, worn by Hillary Swank in Versace, Olivia Thirlby in Vera Wang, Hathaway in Marchesa and Heigl in Escada.

Heigl's gown had a slim-fitting draped bodice and the front of Hathaway's gown was covered in fabric roses. Several stars, though, opted for strapless styles, including Renee Zellweger in a silver lace gown by Carolina Herrera.