Even though he was 8lbs at birth, ds didn't fit into any of the newborn clothes I had for him. And since I had a blanket tucked all around him once he was in the carseat, I don't even know what he was wearing when we came home. Probably a white onesie and a little cotton pair of pants. Pants are best, cuz with a dress or gown you are going to have to hike it up to get them buckled into the carseat. For winter, maybe a little velour pants and sweater outfit?