just buy a few newborn onesies and a few sleepers. maybe two outfits to go home in. the rest I'd buy 0-3, 3-6, 6-9 and 12. My oldest daughter was in 12 months at 5 months. Just depends on baby's size.
I got alot of everything, I had an entire dresser of nothing but newborn clothes and she never wore newborn. this next time I'm stalking up on 0-3, 3-6, 6-9 and 9-12. I'll buy maybe an outfit or 2 of newborn