How to Determine the Cut Length

Measure seamline of garment opening by standing tape measure on edge. For necklines, cut ribbing as described at right. For other garment openings, ribbing is usually cut two-thirds of the measurement plus ½" (1.3 cm). If self-fabric is substituted for ribbing, cut it three-fourths of the measurement plus ½" (1.3 cm).

Pin-fit ribbing or self-fabric around body for straight, close-fitting edges, such as at hiplines, wrists, and ankles. Fold ribbing crosswise for double thickness, and pin ribbing so it lies flat, without gaping; do not distort the ribs. Add ½" (1.3 cm) for seam allowances.