Looks like it is a medium or a M/L Not Sheer, Stretchy Polyester Top of neck to bottom of hem is 36" Great for Graduation Party, Baby Shower, Backyard BBQ, Summer, 4th of July, Memorial Day, Labor Day, Bonfire, Casual Perfect for Fall Time, Great for Layering and Would Look Good with Heels, Flats, Booties, Boots or Sandals Comfy Casual for Running Around. Can be paired with sneakers or sandals Or Vacation Clothes Attire, Arizona, Florida, Miami, Warm Weather, Summer