my son is 15lb and 15 weeks and 3 days old and has only just come out of 0-3. his newborn stuff was too big until he was 4 weeks x

0-3 is up to 10lbs xx

The size :) my little boy was 6lb 9oz born and he doesn't fit in 0-3 they are too big he has to have first size/newborn xxxx

I think newborn is usually upto 10lb and 0-3months is usually upto 14or15lbs xx

On the tags it should say the weight and measurements Hun xx