Henson and Harper are wearing 8-9Y.
Sleeve is intentionally long and fit is oversized. If your child is on the shorter size or you would prefer a shorter sleeve you can size down.

Garment measurements by size (approx):

Size (cm) 1Y 2-3Y 4-5Y 6-7Y 8-9Y 10-11Y 12-13Y
Chest 34 39 42 45 48 51 54
Length 39 45 49 53 57 61 65