Harry Styles in Calvin Klein–Performing with One Direction at day 2 of Radio 1’s Big Weekend at Glasgow Green in Scotland, Harry Styles took to the stage in Calvin Klein Collection’s already popular Obsession sweatshirt. Inspired by Calvin Klein’s timeless fragrance of the same name, the sweatshirt comes from Calvin Klein Collection’s fall/winter 2014 outing by creative director Italo Zucchelli.