Things You'll Need
Instructions
Cut the collar off a T-shirt or sweatshirt. Cut just below the stitching line.
Try the shirt on. Pull the shirt down over your shoulder to gently stretch the neckline. If the neck opening is large enough, you are done.
Cut the neck 1/2 inch below the previous cutting line if the opening was too small.
Continue to try on the shirt and cut the neckline 1/2-inch until you are pleased with the shirt.