I love the comfort and convenience of a tube top but the majority of tube tops/bras run S/M/L & sometimes XL. But for us chesty girls sometimes the XL still won't cover us or they are very uncomfortable. The 13" this top has could be used for ANY size girl! The lean girls could use the length as a top/shirt where us chesty girls would use the length to cover our top  ;)  Either way this top is great and flexible in use and most of all, VERY comfortable!