Question for moms

K
Hi, everyone im due 13 september but baby can born as u know 2 weeks early and 2 weeks late. So thinking what should i buy for my little one. I mean the warmer clothes or not. With sleeves or without fleece or cotton? My sister telling me to buy fleece coz newborns are freeze. Plz any advice. Little bit about me i live in usa in state nebraska