Simplicity 6393; ©1966; Misses' One-Piece Dress ... Designer Fashion: Dress with slightly lowered round neckline and back zipper has side front and side back seams and yoke with back button closing. The dress does not have side seams. V. 1 has short set-in sleeves and topstitching trim. Sleeveless V. 2 has self-fabric tie belt worn thru openings in side front seams. 11 pattern pieces.