This is a sleeveless dress with vibrant colors. It has a lining and is not see-through. The tag says "AS" size. I looked it up online and found that it's a size from the "Andee-colle" series, a line for petite women from the same brand, or a special size that is shorter in overall length and sleeve length than the regular size, equivalent to a 34-36 size (below S size).