Buying baby stuff

Stephanie • Aug 12, 2008💑 Dec 21, 2015💍 Sept 04, 2016 Hayden Alberta Marie👶🏼💖 Dakota Violet Rose Feb 23, 2019! 💜🌹
When should we start buying stuff for baby? The playpen I want is on sale and I want to buy it so bad!! But I think it's just to early still.