Newborn size clothing?

Sarah • I have two beautiful children a boy and a girl. TTC baby #3

This is my second child and it is like I forgot EVERYTHING. (Not literally) but I know newborns come in different sizes and stuff. My first baby (boy) was 7 lbs 6 oz and I think grew out of newborn clothes a month later.

How many newborn clothes do you need? Or just buy like 0-3 months starting out? I'm having a girl and only 28 weeks but I don't know her size (obviously)

I also haven't had my baby shower yet but with my son I got all blankets and barely no clothes at all. And this time around clothes are really what I need besides a few more items I haven't bought yet.

Idk what to do its stressing me out. Am I alone? Gahhh :(