Grecian Blue Wrap Dress

This is a wrap dress that doesn't suit me (would suit a curvier body type) the color is true to the photos, its bright blue and beautiful. I usually wear a size XS or S for reference. I bought this in a small, but i think it would be best on a M. There are no defects, I've never worn this dress, just to try it on. There is a sash by the way that doesnt show in the photos, I have tied it in a bow in the back.