Worthless Sweater or Sheer Top. Teal and Sequins! Women's XS or juniors L?

This listing is for a very sheer top with beautiful sequined embroidery. It says Klassy on the tag, but I've never heard of it. It is very gently used (worn once or twice) and looks fabulous with a black cami underneath. It can't seem to decide if it's a boat neck or off-shoulder neckline, or if it's a top or worthless sweater. You decide! The tag says large, but it fits like an adult small or extra small, so I think I may have gotten this from the junior section 😬 (fwiw, I'm 5'4" and was 120 lbs when I wore it). I really love this top, but this has been a constant "one day I'll lose the baby weight..." My kid is 10, now. My not-loss is your gain! It says hand wash, but really just washing inside-out on delicate cycle in a garment bag is fine. Haven't lost a single sequin!