Baby clothes sizes

I think up to one month is 0-1 month and 0-3 is up to 3 months. 0-3 is defo much bigger.

There is "newborn" which is up to 7lb, 0-1 which is up to 10lb and then 0-3 which I can't remember the weight off the top of my head but is much larger. They're obviously all "suitable" for newborns because newborns can be anything from 5lb-10lb! I've personally bought a few newborn, but mostly 0-1 months and then a few 0-3 months but will get more of them when she arrives

Usually somewhere on the tag/size guide it will have a length or weight. I always go by those because some up to one month are 50cm, which is the same as newborn, some are 54cm, which can be the same as 0-3, some 0-3 are 55-57cm. Some tiny baby are 5lbs and others 6lbs6, you really do have to check the labels tbh. Polarn O. Pyret and other Swedish brands can be up to 10cm larger than British ones too 🤣

Normally sizing goes preemie, tiny baby, up to one month / newborn, 0-3, 3-6 and so on.

Up to one month is sometimes the same, smaller or larger than newborn depending on brand. Like, we had some Tesco up to one month stuff that was smaller than newborn stuff, so she went into that after tiny baby instead.

Tesco and M&S are great if you have a skinny baby too, whereas mamas and papas, Frugi and mothercare are brill for chonks.

Defo depends on the shop so best check labels and have a variety. I've got mixed brands but just put them side by side and taken a few of each xx

Each shop is different so check the back. 0-1 month is usually up to 9 lb. 0-3 months up
To 12 I believe

Each shop is different so just check the back of the packages x