J Jill white pearl embellished light weight tunic sweater size large worn once

I bought this right after delivering twins. Only wore it once and now it is too big. J JILL. Size medium, pearls sewn on. Shoulder seam to wrist cuff measures 21 inches. These aren’t full length sleeves. Shoulder to hem of tunic pullover top measures 33-34 inches. Fine weave fabric. 60% cotton, 40% rayon. There is stretch.