Hayden! Miley! Hilary! See who stepped out in style for Teen Vogue's annual party
Credit: Jeff Vespa/WireImage
Updated: Friday Sep 21, 2007 | 03:40 PM EDT
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Meanwhile, outside on the red carpet, Hayden's onetime beau – and Laguna Beach vet – Stephen Colletti poses for pictures in a fall-friendly black and gray ensemble.
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