Patricia Del Castillo white dress

Darted seams for a flattering fit Side zipper closure Fully lined Missing materials and size tag. Also has snap button one sided on the hem of the skirt. Honestly not sure what it is for. Feels like cotton and I believe it would fit an small. Please review measurements to validate fit Approximate Measurements Underarm to underarm - 16 inches Waist - 14 inches Length - 35 inches