Simplicity 1233; ©1955; Junior Misses' and Misses' One-Piece Dress, Jumper and Jacket: Sheath jumper or dress features a high neckline in front and deep V in back. Skirt has an "easy-walking" pleat. Box jacket is styled with three quarter sleeves with turn back cuffs. There is a small collar. Welt pockets detail lower front edge.