With its ribbed knit and pleated skirt, this dress might sound preppy on paper, but the silhouette gives it an undeniable cool factor: Up top, there’s a stretchy, slim-fitting tank with a scoop back. Down below, a drop-waist skirt (with pockets) cut from a breezy cotton poplin. Done in a neutral granite hue, it’s laid-back but polished—ideal for workdays, weekends—whenever.50% cotton, 45% silk, 4% polyamid, 1% elastane