June 17, 2014 xiaoxiao 9mo xiaoxiao’s 9mo checkup. Weight 20lb 10 / 75-90%; Length 28.5 inches / 75%; Head circumference 17 1/4 inches / 50%. Share:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Like this:Like Loading...