The corset achieved the effect young women desired by creating the ideal silhouette of the day. Girls introduced to training corsets before puberty had slim waistlines and perfect posture as women. We will introduce you to a comparison chart detailing the top waist trainers. Hope it will help you have more information to make the best decision! The roots of this practice dateback to the s, when women wore corsets to make their waists appear smaller and to achieve a smooth hourglass look.