I am currently 17 years old and was diagnosed at 15 after concern about my size and lack of noticeable puberty. A little more info on Turner Syndrome: http://en.wikipedia.org/wiki/Turner_syndrome
AND my proof (my growth chart along with some stuff provided to me by the hospital): http://i.imgur.com/4nDbCKH.jpg
EDIT: Just to verify I'm not that other girl who apparently spams TS stuff a lot, this is me (ignore the weird face im making)- http://imgur.com/gJBtsDT
EDIT 2: I didn't expect this much response! Thanks, everyone! I'm going to bed but if there are more questions, I'll answer them tomorrow. Thanks again!