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 button-up pajamas size guide
Sizes Chest (A) Length (B) Sleeve (C) Pant Length (D) Waist (E)
XS 19.1 25.4 25 39.2 13.8
S 19.7 27.4 25.2 39.8 14.8
M 21.1 28.1 25.4 40.6 15.2
L 22 28.7 26 40.7 15.6
XL 22.2 29.7 27.2 40.7 15.7
2XL 22.6 29.9 27.4 41.7 16.1
3XL 25.2 30.7 27.6 42.1 16.1
Sizes Chest (A) Length (B) Sleeve (C) Pant Length (D) Waist (E)
3-4 years 13.6 17.5 16.5 25.6 10.8
5-6 years 13.8 18.5 17.1 28 11.2
7-8 years 14.6 21.5 19.1 30.7 12
9-10 years 15.7 22.2 20.3 32.9 12.6
11-12 years 15.9 22.8 22 35.8 13.2
13-14 years 17.3 23.6 23.4 37.8 13.6