Derek Blasberg and Friends Kept it Mostly Classy at Barneys Book Launch

Derek Blasberg, Chloe Sevigny

Lauren Santo Domingo, Derek Blasberg, Chloe Sevigny, and Simon Doonan

In celebration of Derek Blasberg's first book, friends Lauren Santo Domingo (dressed in Vionnet), Chloe Sevigny (in Proenza Schouler), and Dasha Zhukova (in Prabal Gurung) feted the man-about-town to support his newly-released etiquette guide, "Classy: Exceptional Advice for the Extremely Modern Lady".

Guests including Francisco Costa, Julia Restoin-Roitfeld, Terry Richardson, Chris Benz, Birdie Bell, Tamara Mellon, Vladimir Restoin-Roitfeld, and Giovanna Battaglia sported illustrated "I'm a tramp" or "I'm a lady" buttons while Blasberg signed books in Barneys New York. Post event, Santo Domingo hosted an intimate dinner party in her apartment with Blasberg's parents (who flew in from St. Louis for the occasion) in attendance.

Source: WireImage