This is a sleeveless dress from Anna Sui Mini. The original price was over 10,000 yen, but I purchased a beautiful used one on Mercari for 5,000 yen. My 2-year-old daughter wore it once at a wedding last summer. It has a lining and a fluffy, flared silhouette, which is very cute. It fit perfectly when she was wearing 80-90cm sizes. Unfortunately, she'll be too big for it next season, so I'm offering it to someone who can still wear it. It's clean with no stains and has been dry cleaned.