The size is 120. However, the skirt is 130. When I bought it, I felt that a 120 skirt would be too short for the entrance ceremony, so I bought a 130. Even a child who wears size 120 can wear it without any problems, and the waist isn't particularly large. The elastic on the ribbon tie seems to be a little stretched, but it can be used without any problems. I bought it for the entrance ceremony, and my three daughters used it. They used it for their respective entrance ceremonies, so it has only been used three times, but the jacket and skirt were purchased about 10 years ago, so please understand. The blouse and socks were purchased 5 years ago. It's a complete set, so you can use it right away. A formal set consisting of a navy blazer, a black pleated skirt, and white lace socks. - Color: Navy - Skirt color: Black - Material: Polyester - Style: Formal dress - Accessories: Ribbon tie - Skirt design: Pleated skirt - Socks color: White - Socks design: Lace Thank you for viewing.