I didn't start buying anything until around 25 or 26 weeks! And even until now at 29 weeks I only have a few bits and pieces... I knew if I started early it would feel like so much longer until baby is here, and also I might end up going crazy and buying too much! I'm trying to buy only the essentials for now, and things we find good deals on etc, and anything else we find we need later on we can get then.