my baby has always been in larger clothes. Like 12 month clothes when he was 6m and 18m when he was 9m but he is 13m now and is finally fitting into age appropriate clothes. All babies are different.
well for Christmas he got all nine month clothes. which the shirts and onezies for fine. but the pants are way to tight
My 2 month old just started to outgrow his 3m. So I'm starting 6m clothes now