Kids' Sizing Guidelines Newborn-24 months | Toddlers 2T - 5T SIZE HEIGHT WEIGHT (kgs) WAIST XS NB 52-56 2-4 43-44 0-3mo. 57-61 4-5 44-46 S 6-9mo. 62-72 6-9 47-48 12mo. 74-76 9-10 48-50 M 18mo. 77-81 10-11 50-51 24mo. / 2T 83-90 11-13 51-52 L 3T 91-98 13-15 52-53 XL 4T 99-104 15-16 53-55 5T 105-109 17-19 55-57 Preschool Boys 4-7 and Preschool Girls 4-6X SIZE HEIGHT WEIGHT (kgs) WAIST S 4 99-105 15-17 53-55 M 5 107-113 17-19 55-56 L 6 114-118 19-21 56-57 XL 6X or 7 119-123 22-24 53-55 Girls 7-18 Regular SIZE HEIGHT BUST WAIST HIPS S 7 127-128 65-67 57-58 70-71 8 132-136 67-70 58-60 71-74 M 10 137-141 71-74 61-62 75-77 12 142-147 75-77 64-65 79-83 L 14 149-154 79-81 66-67 84-88 16 155-160 83-85 69-70 89-93 XL 18 161-166 86-89 71-72 94-98 Girls 7-16 Slim SIZE HEIGHT BUST WAIST HIPS S 7 127-131 61-64 52-53 65-66 8 132-136 64-66 53-55 66-69 M 10 137-141 67-70 56-57 70-72 12 142-147 71-74 58-60 74-77 L 14 149-154 75-77 61-62 79-83 16 155-160 79-81 64-65 84-88 Boys 8-16 Regular SIZE HEIGHT CHEST WAIST SEAT INSEAM 8 119-128 66-69 58-61 65-69 53 9 130-133 69-70 61-62 69-70 57 10 130-138 70-72 62-64 70-72 60 11 140-144 72-74 64-65 72-74 64 12 140-149 74-76 65-66 74-76 66 14 150-156 77-81 67-69 77-81 70 16 157-164 83-85 70-71 83-86 74 Boys 8-16 Slim SIZE HEIGHT CHEST WAIST SEAT INSEAM 8 119-128 62-66 53-56 62-66 53 9 130-133 66-67 56-57 66-67 57 10 130-138 67-70 57-58 67-70 60 11 140-144 69-71 58-60 69-71 64 12 140-149 71-74 60-61 71-74 66 14 150-156 75-77 62-64 75-77 70 16 157-164 79-81 65-66 79-83 74