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Dempsey makes a front-row appearance at Timberlake's fashion debut. Plus: Cameron Diaz, Nicky Hilton and more.

IN THE KNOW photo | Patrick Dempsey

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IN THE KNOW

Patrick Dempsey gets with the program at the unveiling of Justin Timberlake's new clothing line, William Rast, at L.A.'s Social Hollywood on Tuesday. The Grey's Anatomy star rocked a very McDreamy ensemble of his own – a tie-and-cardigan combo.

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Credit: Matthew D. Simmons/WireImage

Published: Wednesday Oct 18, 2006 | 05:15 PM EDT

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