I don't buy any newborn stuff (but that's me). I just buy the 3-6 in the season we're in... Like now I have 3-6 month stuff in summer clothing, and I'm starting to buy just a few things in 6-9 month in cold weather clothing.
My first child was a growing juggernaut and so I hesitate to buy quantities of anything for that reason. Chances are this baby will grow speedily too

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Having a few things on hand for each size is prudent, but I wouldn't get carried away with newborn stuff.
