Simplicity 6731; ©1966; Juniors' and Misses' One-Piece Dress with Detachable Bib and Cuffs: The A-line dress with slightly lowered round neckline has back zipper, set-in sleeves and optional button trim. V. 1 with lace edging trim has long sleeves. V. 2 has long sleeves and features contrasting detachable bib and cuffs with embroidered eyelet edging trim. V. 3 with below elbow-length sleeves has contrasting detachable bib and bias ruffle trim.