So easy to sew: it's just 4 rectangles. Measure shoulder to hem length, then girth at widest part (hips?) and divide by 4. Add seam allowance. Sew allowing for neckline, arm holes. No pattern needed. 1/2 hour, max! A ESSAYER
Try this. Take an old sweater. Cut a slit in along the shoulder down about 7". Fold over raw edge and sew in place. Sew a piece of ribbon about 15" long to one side of neckline and another ribbon to the other side of the neckline. Tie together!