Child or toddler size?

I ordered a size medium for my 8-year old daughter who is tall (was around 54" last Christmas) and it fit perfectly.

Necesito para mi hija ella tiene 3 años que talla necesito comprar

Hola. Tienes que comprar 3T. No compres S porque es para 4-6 años y le quedara muy grande.

Is the costume machine washable? Thanks

Yes, it is machine washable but I put it on cold and gentle cycle. It is such a great costume!!!

my daughter is 10 and wears size 14, but very thin so will an xlarge be too big?

I don’t think a Xlarge will be to big for your daughter. Because of the time period of the costume, you want it to fit in length. If the rest of the dress is a bit large on her it will still drape nicely and it has the waist tie which will help to make it look fitted. If your daughter is narrow through the shoulders this could be problematic in the neck line of the dress being to wide. However, tall girls even when very thin have broader shoulders, so this mostly likely will not be a problem. Good luck, the costume itself is lovely.