1950's Simplicity 2501 Vintage Sewing Pattern Half Size Slenderette - Misses's and Women's Dress with Two Skirts and Detachable Collar and Bow: Dress has large, self fabric collar and button front closing. V. 1 has sleeveless bodice and full, softly pleated skirt. Large contrasting collar and bow trim neckline. V. 2 sheath dress has short set-in sleeves. Slim skirt has soft pleats at front waistline; pleat at lower edge of center back seam. Self fabric bands and bow.