At about 20weeks are started shopping, but this is my first so I waited until after my shower at 34weeks before I bought some of the stuff. If I were you I'd go black Friday and cyber Monday shopping for some of the big ticket items!
With my first child i started at 4 months with dipaers and bath time things.After i found out what i was having.
Every time I go to Walmart if I have extra money I just pick up something even if its one item. Mittens ,towels, blankets, bibs, bottles anything.
I waited until after my shower just to make sure I would buy the same items the first time. this time I started getting things at 6months because I decided not to have a shower.
All through the pregnancy we buy things here and there and then a lot towards the end.
I waited to buy any type of clothing until after gender ultrasound and then for all the main things after I waited until after baby shower
Started at 20 weeks, everything purchased by 27 weeks. I had a budget though so I wanted to start well in advance to look for the best deals & find some things 2nd hand.
I started at 20wks just bought diapers & wipes then waited for my babyshower to get anything else I needed .