Stitching a skirt involves hemming the bottom of the skirt, which is done by folding the fabric over and sewing it in place. Hemming is a three-letter word that is used to describe this process, which is often done with a sewing machine or by hand. It is important to HEM a skirt properly in order to ensure that the fabric does not fray or come undone. Hemming also helps to give the skirt a finished look.