You may have heard this before: wear black. It makes everyone look leaner. When buying a shirt, go for a slim-fit dress shirt. Wearing one that hugs your shoulders, waist and chest will automatically create a slimmer image. Also, wear V-neck sweaters in a thin knit. The V-neck creates the illusion of height and slims down the frame. For your garments, choose thin knit cotton, wool (merino rather than lamb’s wool), cashmere, silk or other blends that sit high on the waist and hips, and snug in the shoulders, chest and arms. Avoid thick knit, heavy and bulky sweaters, as they add weight to a man’s frame.