The layered look is in, Ms. H, and it's a trend that can really work in your favor. The easiest equation: jeans plus basic top plus sleeveless layer, such as a tailored vest or dropped-shoulder cardi. A lightweight sweater with an open front that drapes into soft folds will lend your shape curves and won’t add bulk. When you select a sleeveless cardigan style with a silhouette that extends the shoulder line, you'll also make your waist appear smaller. Layer it over long-sleeved tees now, tanks and camisoles in summer—it's amazing how much wear you can get from one extra piece that adds instant interest to otherwise simple ensembles.