and it regenerates and it doesn't look like they're sharing anything -- any other major organs. >> they were so cute. >> reporter: fast forward 18 years. these girls are all grown up. emily has an artificial bladder and bile duct but otherwise they're your typical teenagers. >> that looks like you. >> no, that looks like me. >> fine. >> reporter: identical twins with a strong connection but just how different are they? so tell me a little about each of you. >> emily is more girlie than i am. she's definitely very into design and planning things out. and she likes to coordinate things. >> reporter: how would you describe your sister? >> at first it's like she's sweet and quiet then she gets like out on a softball field and she's like getter done. lease do it. >> hi. say hello. >> reporter: the girls don't remember being physically conjoined.