My daughter used this outfit to cosplay Marceline the Vampire Queen from Adventure Time (young).
However, I read the reviews and followed their sizing recommendations.
Tommy Hilfiger Girls Crop White Girls' Clothing
54 Review
C9 Champion Girls Supersoft Bright Girls' Clothing and Active
46 Review
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review
Pack Athletic Performance Basketball Drawstring Girls' Clothing
48 Review