it is more correct to compare with the height: (CM) 100=2T-3T£ºlength=59 bust=76 sleeve=45; fits for: 90-100cm height / 2-3 Years Old
110=4T£ºlength=62 bust=80 sleeve=47; fits for: 100-110cm height / 4 Years Old
120=5T£ºlength=65 bust=84 sleeve=49; fits for: 110-120cm height / 5 Years Old
130=6T£ºlength=68 bust=88 sleeve=51; fits for: 120-130cm height / 6 Years Old
140=7T-8T£ºlength=71 bust=92 sleeve=53; fits for: 130-140cm height / 7-8 Years Old
150=9T-0T£ºlength=74 bust=96 sleeve=55; fits for: 140-150cm height / 9-10 Years Old Note: 1.There is 2-3% difference according to manual measurement.(1 inch = 2.54 cm) 2.All measurement in cm, please note 1cm=0.3937ch, 1 inch=2.540cm 3.Please check the figures carefully and order the right size, don't completely depend on the " age advice". It's just for reference.