Under Armour Girls Size Chart

Baby & Toddler
Size Height Weight Chest Waist Hip Inseam Torso
0/3m 23-25" 8-12 lbs. 16-17" 16.5-17.5" 17-18" 6.5" 23-25"
3/6m 25-27" 12-16 lbs. 17-18" 17.5-18.5" 18-19" 7.5" 26-28"
6/9m 27-29" 16-20 lbs. 18-19" 18.5-19.5" 19-20" 8.5" 29-31"
12m 29-31" 18-22 lbs. 18-19" 18.5-19.5" 19-20" 9.5" 30-31"
18m 31-33" 22-26 lbs. 19-20" 19.5-20.5" 20-21" 11" 32-33"
24m 33-35" 26-30 lbs. 20-21" 20.5-21.5" 21-22" 12.5" 34-35"
2T 33-35" 29-33 lbs. 20-21" 20.5-21.5"      
3T 35-38" 32-36 lbs. 20.5-21.5" 21-22"      
4T 38-41" 35-39 lbs. 21.5-22.5" 21.5-22.5"      
5T 41-44" 38-42 lbs. 22.5-23.5" 22-23"      
Girls 4-6x
Size Height Chest Waist Hip
4 38-41" 21.5-22.5" 21.5-22.5" 22.5-23.5"
5 41-44" 22.5-23.5" 22-23" 23.5-24.5"
6 44-46" 23.5-24.5" 22.5-23.5" 24.5-25.5"
6x 46.5-48.5" 24.5-25" 23-23.5" 25.5-26"
Girls 7-16
Size   Chest Waist Weight Hip
YXS 7 25.5-26.5" 23-24" 55-65 lbs. 27-28"
YS 8 26.5-28" 24-24.5" 65-75 lbs. 28-29.5"
YM 10-12 28-30.5" 24.5-26.5" 75-85 lbs. 29.5-32.5"
YL 14 30.5-32" 26.5-28.5" 95-105 lbs. 32.5-34.5"
YXL 16 32-34" 28.5-30" 105-115 lbs. 34.5-36.5"
Plus 7-16
Size Height Waist Hip
7P 49.5-51" 26-27" 30-31"
8P 51.5-53" 27-28" 31.5-32.5"
10P 53-55" 27.5-28" 32.5-33.5"
12P 56-58" 29.5-30.5" 33.5-34.5"
14P 59-61" 31-32" 35.5-36.5"
16P 61-62.5" 33-34" 37-38"

Size chart is a general guide. It may include sizes that are unavailable for this item.