Size charts Bodysuit Sizing Chart: 0-3 months 7 to 11 lbs. 8 in. wide by 14 in. long 3-6 months 11 to 14 lbs. 8 1/2 in. wide by 15 in. long 6-9 months 14 to 17 lbs. 9 in. wide by 16 in. long 9-12 months 17 to 20 lbs. 9 in. wide by 16 1/4 in. long 12-18 months 21 to 24 lbs. 9 1/2 in. wide by 18 in. long 18-24 months 25 to 27 lbs. 10 1/2 in. wide by 18 7/8 in. long Leggings Sizing: (measure from the waist to ankle) 0-3 months 11 1/2 in. long 3-6 months 13 in. long 6-9 months 16 in. long 9-12 months 17 in. long 12-18 months 18 in. long 18-24 months 20 in. long