People warned me that Gerber ran small but these are actually big on my newborn.  She weighed 6 lbs at birth and is 19.5 inches long.  She wasn't a preemie baby, just a skinny string bean of a girl.  I like that the cuffs are hemmed nicely as well and the side snaps make this shirt easy to take on and off.  A wonderful value and we love using these shirts on her.