This is a 4-piece set consisting of a short-sleeved shirt, skirt, ribbon, and cardigan. I have worn it once. Immediate purchase is OK. If you have any concerns, please ask in the comments before purchasing. The color is unified in blue tones. The skirt is above the knee on a 148cm tall person. Sizes: Shirt: Size 9 Skirt: Size 7 (length approx. 45.5 cm) Cardigan: Size 11