Simplicity 2899; ©1959; Toddler's One-Piece Dress: D ress has a two-piece collar, back button closing and soft pleats. V.1 has puff sleeves, gathered lace edging and ribbon belt trim which ties in back. V.2 features puff sleeves, self fabric belts and contrast collar. V.3 sleeveless dress has self fabric belts, contrast binding details dress.