Simplicity 4050; ca. 1961; Slenderette - Misses' and Women's One-Piece Dress: Dress has side zipper and front button closing in bodice, set-in sleeves and six gore skirt. V. 1 dress has a stand-up collar and three-quarter length sleeves. Belt is self or purchased. V. 2 has collar, ribbon trim and above the elbow length sleeves, top-stitching detail and self fabric tie belt.