Welcome to our store! Size Chart:(cm/inch) 0-3M ----- Length:34/13.39 ---- Bust:48/18.90 ---- Adviced Age:0-3 Months 3-6M ----- Length:37.5/14.76 ---- Bust:50/19.69 ---- Adviced Age:3-6 Months 6-12M ----- Length:39.5/15.55 ---- Bust:52/20.47 ---- Adviced Age:6-12 Months 12-18M ----- Length:42/16.54 ---- Bust:54/21.26 ---- Adviced Age:12-18 Months ★NOTE:The size age is recommended age! Please choose the size according your baby's actual condition! ★There is 2-3% difference according to manual measurement, please kindly understand! ★This is Asia size, not Amazon size, a little different with America. Please kindly check the size details before you order, thank you! ★Please note that slight color difference should be acceptable due to the light and screen. ★If you have any question, please do not hesitate to contact us, we will solve your problems as soon as possible. ( 1 inch = 2.54 cm )