In Smallville, Tom Welling played a character 10 years younger than himself. Here's Tom's actual teenage yearbook photo.
How about Mean Girls?
The Fonz: original greaser rebel RUDE TEEN.
And Pitch Perfect?
The O.C.'s teens were always suspiciously presentable.
Dear 90210: There's no way a teen's this mature and confident.
And here's the high school tennis star in 90210:
One Tree Hill?
And Dawson's Creek?
Nary a set of braces in sight.