This is a set including a Burberry dress and inner pants. The size is 90, and the material is 100% cotton for both (see image 7). I received this as a baby shower gift and wore it three times. It has been stored at home for a long time, so please refrain from purchasing if you are sensitive to used items. Also, I have a cat (the clothes were stored in a room that the pet does not enter), so please refrain from purchasing if you have allergies. Thank you.