Blair gives son Arthur a boost in N.Y.C. Plus: Chace Crawford, Justin Bieber, Kristen Stewart and more
Credit: Billy Farrell/BFAnyc/Sipa USA
Published: Wednesday Oct 24, 2012 | 05:00 PM EDT
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Chace Crawford and Kanye West make each other's acquaintance at the launch event for Maison Martin Margiela's H&M line on Tuesday in New York.
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