I was upset when we recieved the package because  it said "Small 4-6." Then below it said, "For 3-4 years old." I decided to try it on before I sent it back. Good thing I did because it fits perfectly! My daughter is six and wears size six pants & shirts. The sleeves are plenty long and it falls to her ankles. The wig fits and isn't as cheesy as I thought it would be. I will be getting white leggings and shirt for her to wear under it since the material is thin and see-through. It's not a high quality costume, but will look cute with her siblings as Luke, R2D2 and Yoda.