Zara trf Collection Snakeprint Long Sleeves Mini Dress-Medium-Button Up-Lined

This is a Zara trf Collection Snakeprint Long Sleeve Mini Dress that is a size Medium. It is lined and 100% Viscose. Laying flat, it measures: Armpit to armpit-17.5" and the length is 31.5". It is a button up. In good condition. Please measure something that fits you laying flat. The length is measured from the shoulder to the bottom hem. I measure the waist laying flat and double that for the waist measurement. This is for both our benefits so there will be no hassle of returns for not fitting. Thank you in advance.