I know the twins are different, even though we've been told they're identical many people can see the differences (one has a rounder face, the other a longer face, one is taller, etc.). Driving home I noticed they smile differently. G has a huge smile and he flashes it all the time. It's easy to see his eight teeth. J, on the other hand, has a little smile. He can smile big, but he reserves that for laughing or people he's really excited to see. It's one more way my little babies are individuals.