I ordered the XS for my 6 year old, she is about 45-46 inches tall and weighs 45 pounds. The sweater should be loose at the bottom, but the top half is tighter. That's good, but the sleeves are very long. She has to wear this as part of her workout for the gym. If it wasn't for the very long sleeves I would have made them larger so she could wear it longer.
UNACOO 2 Pack Sleeveless Cotton Dresses Girls' Clothing
62 Review
Amazon Brand Sleeveless Unicorns Metallic Girls' Clothing in Dresses
75 Review
Castle Fairy Pageant Wedding Communion Girls' Clothing for Dresses
53 Review
Castle Fairy Communion Pageant Bridesmaid Girls' Clothing for Dresses
54 Review