- For cuffs on children's pajamas, I use a strip of ribbing that is 4" wide and 1/2" seam allowances.
- For a neckline finish on children's pajamas, I use a 3" wide strip of ribbing and 1/2" seam allowances.
- Use ribbing or self fabric which has a 50% stretch. If you are using self fabric, cut it out of the crosswise grain. (Crosswise grain is the opposite of cutting it horizontal to the salvage edge.)
- Use a tape measure, standing on its edge, to measure the seam line of the area you want to attach ribbing to. Don't measure your seam allowances.
- The formula for the amount of ribbing: Two thirds of the total number of inches. For example, if the opening is 12 inches, 12 divided by 3 equals 4. 12 minus 4 equals 8 inches of ribbing.
- Fold the ribbing strip to find the 1/4 marks. Divide the area you will be applying the ribbing to into 1/4's and mark the points. Match your 1/4 marks. Stretch the ribbing as you sew it on using a serger or stretch stitch.

