By Kendall Herbst
Updated Oct 06, 2010 @ 3:32 pm
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Sipa; Zuma Press

There's fashion and then there's fashion. Yesterday was one of those big, monumental days during Paris Fashion Week filled with game changers like Chanel, McQueen, Valentino, and more. Keira Knightley, Lily Allen and Gossip Girl's Clemence Poesy came out to applaud Karl Lagerfeld after his epic, 18-minute Chanel show. While Sarah Burton thoroughly impressed critics with her first collection for the house of Alexander McQueen. Click through the gallery below for all the need-to-know news, trends we are loving now, plus best celeb appearances.