After always having to go look up the information online I decided to pool all the info I could find into one document that I can print and tape up on my wall!!!! You can download it here:
Hopefully it can be a help to you as you create clothes for your kids! I did notice some discrepancies among different websites so the best thing to always do is measure your subject!!! :) Let me know if you think I should change any of the numbers!!!!