Stefani "knows clothing and loves it," says Dubin. "Even her casual looks are well put-together. She loves to experiment." While the singer (and designer of her own clothing line, L.A.M.B.) "does the high-fashion talking," her rocker husband (left, in Studio City, Calif.; right, in West Hollywood) has "more of a casual, laid-back look. He's a well-suited backdrop to her fashion risks."