Rob Lowe
Although we now think of him as the suave and witty seasoned actor he has become, Rob Lowe technically started his career as a child actor at 12. His breakthrough came in Francis Ford Coppola's "The Outsiders."
He achieved even greater fame as Sam Seaborn on the beloved series "The West Wing." Lowe's career has only ascended to new heights since then, and he remains as captivating now as he was in his youth.