After Lily Allen and Vanessa Paradis, now is the time of Blake Lively, Serena from "Gossip Girl," to shine for Chanel. Photographed by Karl Lagerfeld, she presented the newest creation of the Maison: Mademoiselle. It’s a small, somewhat rounded bag and half of its straps are chains. On Saturday, Lagerfeld threw a dinner party to celebrate the news with a mini concert by Florence Welch. Blake looked beautiful next to the kaiser’s other muses, such as Elisa Sednaoui and Anna Mouglalis. Check out the first publicized look of Mademoiselle!