Citizens of Humanity Carlotta Vest

19" Total length 16.5" pit to pit I'm between a small and medium on top and was hoping the small would fit (last in stock) but it's a touch too small. Style No. 4110225550026; Color Code: Cotton, polyurethane Button front Machine wash USA Note: Hanging tag shows extra small but attached label shows small. I compared this to the extra small and it is an inch wider at the bust, so def a small, not extra.