Fashion Faceoff

Sometimes, stylish star minds think alike. You decide: Who wears it better? Vote on Hayden vs. Sienna and more. By Melissa Liebling-Goldberg

  • HAYDEN VS. SIENNA photo | Hayden Panettiere, Sienna Miller

Credit: Brian Ach/WireImage; Goff/INF

Updated: Wednesday Oct 17, 2007 | 06:00 AM EDT

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HAYDEN VS. SIENNA

The Heroes star celebrated her 18th birthday by visiting The Late Show in her Alice + Olivia dress, while the British actress sparkles in her sequined minidress at a London club opening.

Buy It!
Alice + Olivia Sequin Strap Dress, $440 at shopbop.com