Simplicity 3507; ca. 1960; Misses' One-Piece Dress with Detachable Collar and Sash: Dress has wide collar and set-in sleeves. V. 1 has short sleeves, self fabric sash, top-stitching and slim skirt with back kick pleat. V. 2 has full gathered skirt and 3/4 length sleeves gathered into buttoned sleevebands. Contrasting detachable collar has notch detail and is worn over self collar.
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