Simplicity 5680; ©1964; Jiffy One-Piece Dress or Jumper in Girls' and Chubbies' Sizes: Simple-to-Sew. Sleeveless garment has V neckline, back zipper closing and braid trim at neckline and lower edge. V. 1 features a contrasting vestee at front neck edge. V. 2 braid trim is optional.