I bought this costume for my 2 and a half year old girl and I was actually quite surprised how small fitting it is. Sizing says 3–4 but it is much shorter than pictured.My little girl is quite petite for her age and she may not be able to wear it when she's 3. Otherwise, it is my favourite witch costume on the market at the moment. Bright, colorful and sparkly as well. My daughter is going to look fantastic at her Halloween party!