Simplicity 4100; ca. 1961; Proportioned Skirt (One Yard or Less of 54" or 60" Fabric): Slim skirt has one major pattern piece. Skirt featured raised waistline, back zipper closing and slit opening at lower edge of back seam. Belt is purchased. V. 2 and 3 have welt trim. V. 2 has two-piece pointed welts with button trim. V. 3 has top-stitching detail.