Uniqlo Slim-cut cotton suits and jackets; cashmere and merino wool sweaters in every imaginable color. J.Crew Plaid, chambray, and denim shirts. (Think weekend, not work.) Preppy American suits, updated for the cool guy. H&M Tapered dress shirts and smart suits for the office. Topman For the young and trendy at heart, with a constantly replenished stock.