Infant Baby Boy Girl My 1st Cinco De Mayo Birthday Bodysuit Romper Mexican Uno Birthday Onesies Baby One Piece Jumpsuit Size chart:(cm/inch) Size(cm) 70 Length: 36 Bust: 48 Advised Age: 0-3 Months 80 Length: 38 Bust: 50 Advised Age: 3-6 Months 90 Length: 40 Bust: 52 Advised Age: 6-12 Months 100 Length: 42 Bust: 54 Advised Age: 12-18 Months Size(inch) 70 Length: 14.17 Bust: 18.90 Advised Age: 0-3 Months 80 Length: 14.96 Bust: 19.69 Advised Age: 3-6 Months 90 Length: 15.75 Bust: 20.47 Advised Age: 6-12 Months 100 Length: 16.54 Bust: 21.26 Advised Age: 12-18 Months