CHRISTOPHER & BANKS mock neck sweater

Christopher & Banks soft, purple mix mock neck sweater. Neck, sleeves at the wrist, and bottom are ribbed. It is a pullover, longline tunic. Neck tag is cut out but the fabric tag is not. 55% cotton, 25% polyester, 20% acrylic. Really nice condition. I would say a medium or large? Please refer to my measurements to ensure a proper fit. Purple, brown, yellow, orange, white. Great fall colors! Pit to pit 21.5" Length 25" Measurements are lay flat and approximate. My home is smoke and pet free.