A black sheath dress means serious dressing. The fitted silhouette hugs without clinging and the overall effect is grounded and present. Sheath dresses work best in substantial fabrics that hold their shape through wearing. A midi length is appropriate and maintains proportion without drawing attention. Long sleeves or three-quarter sleeves feel respectful and give you somewhere to put your hands. The neckline should be conservative and simple. A sheath dress requires nothing extra in terms of styling because the structure does the work. Black shoes and minimal jewelry complete the picture. The fitted cut means you need to choose your size correctly but the resulting outline is dignified and composed. These are the dresses that make you feel held up when you need support.