Yes - in fact DS1 still fits the ones that DS2 wears so if I make a calculation error when i'm packing clothes - it's all good!
I used cloth nappies and second hand ones too. Hand me downs are awesome! It's not about money - the environment needs less clothes wasted. And it sure saves me going to the shops unnecessarily. (that took me 2 goes to spell )

I am super lucky to get so many clothes from my mother's group. But none have ever passed undies on