Whether you want to refresh your Monday-to-Friday wardrobe or you need an evening update, a double-breasted vest is your style savior this season. Sleek and sophisticated with a masculine edge, this piece will take you from the office to happy hour with ease. Need proof? Just look at Max Mara’s minimalist gray wool versions, Helmut Lang’s structured styles and Christian Siriano’s tuxedo vests. Layer yours over a shirt by day or wear it on its own after dark.