The rolled hem foot. #63, #66, #69, etc. The rolled hem helped me finish the hem on some bride's maids dresses this week. Here's a tip when working with chiffon. It can be difficult to pin up this airy fabric. Kind of like pinning water. I've found if you mark the hem by pinning at floor level it's much easier. Place a pin every 3 inches at floor level. (Make sure the person has the right shoes on.) This way you can cut up from these pins allowing about 1/4" to 3/8" for the roll of the hem. (On fishing line fluted edges, cut right at the floor level where you placed the pins.) Happy Sewing, Barb