Celebrity Oscars Best Dressed From Cate Blanchett to Beyoncé Knowles, check out the stars who showed off the most dazzling styles on Hollywood's biggest night. By Marla Lehner and Janice Morris By People Staff Published on February 22, 2005 03:00 PM Share Tweet Pin Email Trending Videos 01 of 11 CATE BLANCHETT Mike Blake/Reuters/Landov Best Supporting Actress winner Cate Blanchett (for her portrayal of Katharine Hepburn in The Aviator) lights up the red carpet in a lemon Valentino gown, set off with a chocolate bow at the waist and a sparkling brooch at her shoulder. 02 of 11 NATALIE PORTMAN JEFF HAYNES/AFP/Getty/Newscom Best Supporting Actress nominee Natalie Portman (for Closer) commands the red carpet in her signature look, a shimmering Art Deco-style Lanvin gown topped off with a sparkling headband. 03 of 11 HILARY SWANK Mike Blake/Reuters/Landov Best Actress winner Hilary Swank (for Million Dollar Baby) looks like a million bucks in a daring, backless midnight-blue Guy Laroche gown. 04 of 11 KIRSTEN DUNST Vince Bucci/Getty Polished Spider-Man actress and Oscar presenter Kirsten Dunst embodies Hollywood elegance with her form-fitting, black lace dress. 05 of 11 BEYONCé KNOWLES Lisa O'Connor/ZUMA/Newscom Pop star Beyoncé Knowles, who performed three Oscar-nominated songs including "Learn to Be Lonely" from The Phantom of the Opera, shows off her sexy curves in a graceful vintage Versace. 06 of 11 HALLE BERRY Chris Pizzello/AP In sleek silver, Oscar presenter (and past Best Actress winner) Halle Berry is stunning in a multi-textured Atelier Versace gown that flows in crepe, sequins and satin over her toned frame. 07 of 11 EMMY ROSSUM Amy Sancetta/AP The Phantom of the Opera star Emmy Rossum shines in a classic ruby Ralph Lauren gown paired with matching gems from Harry Winston. 08 of 11 SOPHIE OKONEDO Jeff Kravitz/FilmMagic Sophie Okonedo, a Best Supporting Actress nominee (for Hotel Rwanda), looks fairy-tale lovely in a full-skirted, strapless white Rochas gown with minimal accessories. 09 of 11 SALMA HAYEK Mario Anzuoni /Splash Oscar presenter Salma Hayek sparkles in a flamenco-inspired, custom-made Prada gown, accented with bows and sequined flowers. 10 of 11 CATALINA SANDINO MORENO Gilbert Flores/CelebrityPhoto Best Actress nominee Catalina Sandino Moreno (for Maria Full of Grace) floats down the red carpet in a heavenly, body-hugging white Roberto Cavalli gown set off with crystal-encrusted straps and pearl-drop earrings. 11 of 11 ZIYI ZHANG Amy Sancetta/AP House of Flying Daggers actress and Oscar presenter Ziyi Zhang comes out a fashion winner in a glamorous black Monique Lhuillier gown and glittering Bulgari diamonds.