So who most defines chic this year? Your list starts here!

• 26 Isabella Rossellini At age 56, we all still love her! "You have to be a little glamorous when your mom [Ingrid Bergman] was a major movie star," says McMullan.
• 25 Carolina Herrera The Venezuelan-born designer's signature: a classic white collared shirt. "She's combined the power of her heritage with her New York lifestyle to become one of the greatest designers in history," says Krakoff.
• 24 Selma Blair She's proof that having Karl Lagerfeld as your BDF (best designer friend) can't be bad. "Selma keeps it flawless," say Stanley and Ehrlich.
• 23 Christy Turlington We love that we're more likely to see the supermodel with a yoga mat than on the runway. "Her look is never too much or too little--always just right," says Normant.
• 22 Natalia Vodianova Vodianova ushered in the reign of the Eastern European model and still lands covers. "Natalia can wear just about anything and make it glamorous," say Stanley and Ehrlich.
• 21 Gisele Bündchen "What makes her sexy is her tomboy quality," says Serge Normant. This year she looked gorgeous in gowns--and in jeans with Tom Brady.

• 19 Marion Cotillard All you need to know: She picked out her Oscars dress herself. Says Ivan Bart: "She's fearless--and fearless is glamorous."
• 18 Rihanna Hit songs + adorable style + edgy new haircut = one chic pop star. Welcome to the list, Rihanna! "She's great at mixing hard and soft elements," says Xanthipi Joannides.
• 17 Katie Holmes The bob! Those clothes! Where'd Joey Potter go? Mrs. Cruise is now officially a major fashion gal. "Katie's style is chic without being stuffy," wrote Glamour reader Lauren Marquez.
• 16 Catherine Deneuve "Catherine Deneuve exudes a very different kind of glamour--she's sexy in a less obvious way," says Reed Krakoff of the French icon.
• 15 Sofia Coppola Indie-film director and übercool chick, she's patented smart-girl style. Says Lieberman: "Any woman who has the confidence to wear flat sandals on the red carpet is truly glamorous to me." Love her in heels, too!
• 14 Iman "She's cultivated and still gorgeous at 52," says Doonan of the legendary model, cosmetics mogul and, yup, wife of David Bowie.