Simplicity 4558; ca. 1962; Slenderette - One-Piece Dress in Proportioned Sizes: Dress has set in sleeves, slim skirt with back kick pleat, back zipper closing and self or purchased belt. V. 1 has long sleeves and round neckline. V. 2 has short sleeves and the neckline is square in front and round and lowered in back.