Thankfully, I did read the reviews before ordering and knew these ran small. I will add that they run REALLY small. I can already tell these will be used very briefly due to outgrowing them quickly, but this is my second child and I really got this (the 3-6 month size) for those first few weeks that I know there is no need for pants and to make diaper changes easier. I gave it 4 stars because their sizing should really be more accurate, but other than that, they are great. I bought 3!See full review