Sample 808. Sized as a S - I'd confidently say XS. See measurements in photos. I'm a consistent size 4 and this was too tight on my mid-back. I’m also a seamstress so I know how to measure myself and clothes. No stretch to the material. Sad because it's soo slay, and clowncore is IN baby. - A-line construction with hidden back zip - Paneled sheer tulle, nicely detailed and finished -Adjustable spaghetti straps