You gotta keep your head straight'As a student at Central Saint Martins in the early aughts, spending money on fashion books was something I couldntand didnt thinkto do. That was until 2010, when I spent an afternoon in Paris with the designer Christophe Lemaire who introduced me to Cheap Chic. Part fan letter, part essay, You gotta keep your head straight about clothes is an appreciation of the first consumer guidebook to thrift store shopping, published in New York in 1975. This is