March 10, 2015March 12, 2015 xiaoxiao 18mo xiaoxiao’s 18mo checkup. Weight 23lb 2 / 50-75%; Length 31.75 inches / 50%; Head circumference 18.5 inches / 50-75%. 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...