Calvin Klein Kids' Underwear Size Chart
Girls' Underwear Sizing

General Size US Clothing Size Waist Measurement
(in inches) 		Weight
XS 4-5 20-21 33-39 lbs
S 6-7 22-23 40-54 lbs
M 8-10 23-24 55-66 lbs
L 12-14 24-25 67-84 lbs
XL 16-18 26-27 85-110 lbs


Girls' Bra and Undershirt Sizing

General Size US Clothing Size Chest/Bust Measurement
(in inches) 		Waist Measurement
(in inches) 		Weight
XS 4-5 22-23 20-21 33-39 lbs
S 6-7 24-26 22-23 40-54 lbs
M 8-10 27-29 23-24 55-66 lbs
L 12-14 30-31 24-25 67-84 lbs
XL 16-18 32-33 26-27 85-110 lbs


Boys' Underwear Sizing

General Size US Clothing Size Waist Measurement
(in inches) 		Weight
XS 4-5 20-21 33-39 lbs
S 6-7 22-23 40-55 lbs
M 8-10 24-25 56-70 lbs
L 12-14 26-27 71-100 lbs
XL 16-18 28-30 101-125 lbs


Boys' Undershirt Sizing

General Size US Clothing Size Chest/Bust Measurement
(in inches) 		Waist Measurement
(in inches) 		Weight
XS 4-5 23-24 21-22 33-42 lbs
S 6-7 25-27 22-23 43-58 lbs
M 8-10 28-29 24-25 59-73 lbs
L 12-14 30-31 26-27 74-100 lbs
XL 16-18 32-33 28-30 101-126 lbs