Best wishes, hope that every baby grows healthy and happy!Sizing Info (1inch = 2.54cm)size 6M romper length 41cm for 0-6Msize 9M romper length 43cm for 6-9Msize 12M romper length 46cm for 9-12Msize 18M romper length 48cm for 12-18Msize 24M romper length 50cm for 18-24M