My daughter is 3.5 years old, she is taller. She usually wears a size 4T-5T so I figured going small (6-7) would allow her to grow into this skirt. I was surprised to see that the little one just fits. There's an elastic band to keep her comfy for a while, but you might want to go a size larger than usual. Skirt made of very thin, flowing material. It is on the transparent side but not fully transparent. The layered material and the bow on the front give it a nice, simple, feminine look without being overbearing. A great addition to any dance leotard.