Here is a page done by a friend of mine called Caiman2 on Devientart. It involves his OC named Sarah who is suffering from the world's largest growth spurt. The series is ongoing although I'm not sure about how often it will be done. Here is a link anyway to his Devientart page where he has other drawings. They are mainly of Avatar The Legend Of Aang and Legend Of Korra but he is really worth looking out for.
http://caiman2.deviantart.com/