Also known by name “the super hem.” Often used to hem jeans, while leaving the original hem in place. To create a New York hem simply turn the hem up, right sides facing each other, assure the original hem line is currently where you would like the new hem to be. Use a sewing machine to sew under the original hem. Then cut off excess fabric. Then press the new hem down, and put a top stitch over the trimmed fabric through original hem stitch subsequent to pressing the new hem down.