Newborn clothing question

Lisa • I`m 35 years old, I currently live in Lapine Oregon with my family. I have a wonderful husband and 2 amazing baby boys. I`m a sweet person, funny, kind and loving. I like to laugh.
I'm due at the end of July. I'm wondering how long do newborns typically fit into newborn clothing? I want to buy him a ton of newborn clothing but I don't want to buy too much.