Waistline reducers are garments that are designed to reduce the circumference of the waist. One of the most popular waistline reducers is the corset, which is a garment that is typically made of fabric and boning and is worn around the torso to create a slimming effect. CORSETS have been around for centuries and were originally used to shape the body into a fashionable silhouette. Today, CORSETS are still popular and are often used as a fashion statement or to help create an hourglass figure.