As I’m sure you’re well aware, Paris Haute Couture Fashion Week is in full swing, and so is all the festivity that comes along with it. Last night, the biggest (and most notoriously fun-loving) fashion superstars this side of the Rive Gauche celebrated the launch of Prada’s 24 hour museum. A collaboration between Prada and the Italian visual artist and satirist Francesco Vezzoli, the pop-up extravaganza is open for today only. Talk about a whirlwind! The evening began with a private dinner, and the afterparty featured a DJ set by attendee Kate Moss (all decked out in silver furs, natch). With a roster that boasted Salma Hayek, Catherine Deneuve, Marianne Faithfull, Anna Wintour, and Emmanuelle Alt among guests, this was the party to be at last night. To have a look at the museum exhibit before it’s gone, and the photo gallery from the event, check out 24 Hours Museum.