Quonnie kids swim is based on Standard body measurements. That being said, I'm fully aware of that fact that kids come in all shapes and sizes which is why Quonnie Kids suits are mix and match to give you flexibility with colors and sizes. If you want the best fit possible. Take a measuring tape and measure out your childs's chest/ waist/hip and height and throw those measurements into the notes, this way I can cut your childs suit to get the best fit!
Height 38 /Chest 22 / Waist 21/ Hip 22-1/2
Height 42 / Chest 23-1/2 / Waist 22 / Hips 24
Height 46 / Chest 25 / Waist 23 / Hips 25-1/2
Height 50 / Chest 26-1/2 / Waist 24 /Hips 27-1/2
Height 55 / Chest 28-1/2 Waist 25 / Hip 30
Measurements are in inches.