How do I know which diapers to buy is there diff sizes??

yes different sizes for different weight....premie, newborn, 1, 2, etc

@ariannaandbrianjrmother, So what is the size for new born, because I should start buying them to get prepared.

@elly82 they will have a "N" on the boxes for newborns

@ariannaandbrianjrmother, Thank you hun that helps

@elly82 you're welcome...all the boxes have sizes on them and weight recommendations