I purchased this item from "BOX," a shop in Omotecho, Okayama City, which sells "adult cute" clothing from the 1990s, including brands like Lewis Carroll and pa.se.ri. Although it's originally intended as fashionable wear and not formal wear, I have used it as such. I've worn it about 15 times. The care instructions state "do not wash," but I have gently hand-washed it in lukewarm water with a mild detergent. I hand-washed it just before listing it and ironed it from the inside. Please consider purchasing only if you understand that this is a used item.