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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
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Credit: Brian Ach/WireImage; Goff/INF
Updated: Wednesday Oct 17, 2007 | 06:00 AM EDT
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