January 25, 2013February 25, 2013 9mo 9mo checkup. Weight 19lb 7oz / 50-75%; Length 28.5 inches / 75-90%; Head circumference 17.75 inches / 75%. Share: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to share on Pinterest (Opens in new window) Pinterest Like Loading...