'Gossip Girl' costume designer Eric Daman is a BIG deal - he not only designed the most ICONIC looks for Chuck, Blair and Serena, he's back on the Upper East Side as the costume designer for HBO Max's Gossip Girl reboot. Eric told Cosmopolitan all about what's like to be a stylist for such a big show (and 9 main cast members!) and revealed his inspiration behind so many original GG looks that we remember.