What is the difference between a slip and a chemise?

A slip is a form-fitting undergarment worn under a dress or skirt to prevent see-through and smooth out the silhouette, while a chemise is a loose-fitting, lightweight undergarment or nightgown typically worn for sleepwear or lounging. Slips are usually more structured and designed to be worn under clothing, while chemises are typically more relaxed and flowy.