I checked the tag, but it didn't specify the Japanese size. My daughter, who has a standard build, wore this with 80cm clothing, so I'm listing it as 80cm. Please use this as a reference. It's a used item, but there are no noticeable stains. I dressed her in this over an undershirt, and she wore bloomers underneath (^.^). Color: Blue Pattern/Design: Floral Sleeve Length: Sleeveless Skirt Length: Short / Mini Silhouette: Flare Season: Spring, Summer