15th December 2012 11:48
Some would say otherwise, but I would not get newborn at all. I would start off with 0-3. As for how many, it'll depend on how often you intend to change and how often you do a wash. We do a wash every day/second day so although we got quite a few, we ended up using about a handful if at all.
I'd say you might go through 2-3 a day at the start, depending on how dirty the baby gets. I'm sure you'll get other answers from other people, but we mostly used the onesies as nightwear. Only put them in them during the day in the first month or two.