i am not sure how big the baby will be i am smallish (i am only 5'2 and like a size 12 before preg, yes i consider that pretty small) and dp is pretty big (like 6' and very broad shoulders) i was born at around 7lbs i think not sure about dp i never realised u should buy 0000 i thought 000 was standard newborn size so lucky this was pointed out to me!!!