SIZING INFO | RJC | Boys | 2pc Cabana Set | SIZING FACTS | these are the measurements of the cabana shirts, NOT your boy's body >> SHIRT CHEST - (6 Months) 21.5" (12 Months) 23" (18 Months) 24.5" (24 Months) 26" (1T) 26.5" (2T) 27" (3T) 27.5" (4T) 29" (5T) 30" (6T) 31" (7T) 32" >> SHIRT LENGTH - (6 Months) 13" (12 Months) 13" (18 Months) 14" (24 Months) 14.25" (1T) 14.25" (2T) 15.25" (3T) 16" (4T) 17" (5T) 18" (6T) 18.5" (7T) 19.5" | for best results - machine wash cold | delicate cycle | mild soap | line dry | cool iron | please contact us if you need sizing assistance. Mahalo!