hello...1 year old chest circumference: 52 cm / height: 50 cm...),( 2 year old chest circumference: 54 cm / height: 53 cm...) (3 year old chest circumference: 56 cm / height: 56 cm...), ( 4 year old chest circumference: 58 cm / height: 59 cm...), ( 5 year old chest circumference: 60 cm / height: 64 cm...), ( 6 year old chest circumference: 62 cm / height: 67 cm....), ( 7 years chest circumference: 64 cm / height: 70 cm...) ,( 8 years chest circumference: 66 cm / height: 73 cm...) ,(9 years chest circumference: 68 cm / height: 76 cm...) ( 10 years chest circumference: 70 cm / height: 79 cm...) THE SIZE IS THE DISTANCE FROM THE SHOULDER TO THE END OF THE SKIRT.