Simplicity 5509- copyright 1973 Young Junior/Teens Smock, Mini-Dress and Pants: The mini-dress with contrasting collar has a back zipper, high round neckline and long set-in sleeves gathered with elastic casings. The smock with skirt gathered to yoke has back button closing, low square neckline, short ruffle type sleeves, tie ends and embroidered braid or ribbon or novelty bias tape trim. The pants have back zipper and elastic waistline casing.