Okay, I got this in 2021 from Chinese Lolita Updates- love the idea of it, turns out I'm definitely a size S for this style. I've tried it on, but never been out in it- you can see it still has all the tags, including the big weird one that you have to remove to wear it (around back of collar).  Will find the original packaging and accessories and add a picture soon. Lying flat, bust (bottom of arm holes on both sides) 17.5 inches, waist: 14 inches.