To ensure the costume fits comfortably, follow these easy steps using a soft measuring tape:

Measure the Costume, Not the Child - The measurements shown on the site are for the costume itself—not the child’s body. This helps confirm how the finished outfit will fit.
Chest (Around the Broadest Point) - Wrap the tape around the fullest part of your child’s chest—just under the arms.
Torso Length (Top to Bottom) - Measure from where the shoulder meets the neck down to the seam between the legs. This ensures the costume’s bodice or jumpsuit will fit well.
Waist (Natural Waistline) - Wrap the tape around your child’s natural waist—usually at belly-button level.
Length of Dress or Jumpsuit - For dresses: measure from the shoulder (at the base of the neck) down to the bottom hem. For jumpsuits or full-body outfits: measure from shoulder down to the ankle.
Compare with Size Chart - Match these measurements to the costume’s size chart to pick the best fit.
Measure Over Clothing If Needed - If your child will wear layers under the costume (like a hoodie), measure over those extra clothes so the costume isn’t too tight.
Use the Right Tape - A soft, flexible sewing tape works best—avoid rigid rulers or construction tapes.
Don’t Guess—Measure Precisely - Sizes vary across brands, so always measure rather than estimate to avoid disappointment.

Chest: around the fullest part, just under the arms
Torso Length: from shoulder-neck point down to leg seam
Waist: around natural waist (near belly button)
Dress/Jumpsuit Length: shoulder to hem (for dresses); shoulder to ankle (jumpsuits)
Layers: measure over layers if the child will wear them