They Played Teens, When They Weren't Teens

  
“Gossip Girl” may have gotten flack for casting 14-year-old Taylor Momsen for the risqué role of Jenny Humphrey, but at least she was a teen playing a teen.
For years teeny bopper audiences have fawned over so-called “teen heartthrobs” who were, at times, double their TV age.

Read more: http://www.foxnews.com/slideshow/entertainment/2011/05/21/adults-playing-teenagers-movies-tv/#slide=1#ixzz1nrhnOUW7