Reposhing because it sadly does not fit me. Reformation doesn’t have a 00 size, but this dress runs real small and it not true to their current 0 sizing. I would say it a 0P or a 00. It’s a shame because this dress is so stunning. For reference I have a 24-25 in waist, so this should fit someone with a 22-23 in waist. See flat measurements in pictures above. Beautiful black crepe fabric (57% viscose, 43% rayon). Perfect condition, no flaws or stains. Questions? Leave a comment below!