BY THE BOOK: Cintra Wilson’s forthcoming book, “Fear and Clothing,” will analyze fashion advertising along with the politics of fashion and how style reflects the cultural zeitgeist. “Fashion is a language, and it’s very articulate,” Wilson said recently to a standing-room-only crowd at the Dallas Museum of Art. Wilson analyzed the recent plethora of luxury fashion ads featuring “two stoned-out looking girls, totally identical, who are dressed exactly alike.” The Freudian concept at work here is the doppelganger — a wayward, id-driven double, she theorized. “It’s basically saying to the consumer, you can be your own dirty lesbian twin,” Wilson said. “If this isn’t terrorism, I don’t know what is.” The book will also look at Disney princesses, sartorial styles of dictators, regional fashion and other topics, particularly how clothing represents the person. It will be published by WW Norton, although no publication date has been set.