AP British Bow Tie Blouse, which I bought second-hand, in-person at the Osaka ClosetChild branch. I wore it once and found it just a little too tight for me; I normally wear a US size M. Please see the LoliLibrary link for measurements; it's 100% cotton, so it will not stretch much. I think a size S would be about right for a comfortable fit. Comes with the bow, which has a wire running through it to adjust its shape. It's in very good condition, except that the strings on the collar that you would thread the bow through are a little twisted/loose from normal wear (see picture 3).