Here you can find a baby clothes size chart which I think is very useful! As you surely experienced purchasing baby clothes is like playing the lottery 🙂 It is like you bet on a number, and after that you pray and hope it is the right one for your baby. But you can change this with a little help!
It is true that our babies grow quickly but if you use this size and age chart you probably can determine what size fit for your baby.
* It is important that sometimes age is not the best indicator of size, so if you have any doubt you can choose based on weight and height!