To find the right size, compare it with a similar garment that you wear regularly. Lay it flat and measure the outside.

Please note that measurements may vary slightly.

Christmas dress size guide
Sizes Chest (A) Length (B) Sleeve (C)
XS 16.1 31.7 21.1
S 17.3 32.1 21.9
M 18.5 32.5 22
L 20.3 32.7 22
XL 21.9 32.7 22
Sizes Chest (A) Length (B) Sleeve (C)
3-4 years 13.4 22 14.6
4-5 years 13.6 22 15
5-6 years 15 23.6 16.5
6-7 years 15.4 24.4 17.5
7-8 years 16.1 25 18.5
9-10 years 17.5 26.4 18.9