Ethnic Identity Leos Imports (TM) Girls Mexico Dress

My daughter is 6 and tall for her age. She wear size 7-8. What size should i get?

My daughter is 6 almost 7. Should i get her a size 6 or 8?

Does this dress run big or is it true to size? My little girl is 5 years old and weighs 46 lbs.

My daughter wears 12-18 months. What size would you suggest?