A Pea in the Pod NWT Cotton Maternity Top

Pea in the Pod Cotton Eyelet Maternity Top in Navy. The tag recommends purchasing your pre-pregnancy size and this top is labeled a Medium. However, I am selling this for my niece who said it runs more like a Small. Underarm to underarm measures 17” across (maximum). So I’ll call it a S/M but please take note of the chest measurement. The top is 28” long. Lined. NWT.