Jenn on Twitter: "Zippers in spandex? Lay down a stripe of non-stretch interfacing along the seam allowance. It'll stabilize your zipper so you don't get that ridiculous wave from the fabric stretching
Jenn on Twitter: "Zippers in spandex? Lay down a stripe of non-stretch interfacing along the seam allowance. It'll stabilize your zipper so you don't get that ridiculous wave from the fabric stretching