5. Gabrielle Union
Played A Teen In: Family Matters (1993),
7th Heaven (1996),
10 Things I Hate About You (1999),
Bring It On (2000),
Abandon (2002)
Age: 40
Gabrielle Union first started playing teens in her early 20s, playing small roles on sitcoms. By the turn of the millennium, the nearly-30 actress was still playing 17 in big teen flicks like
10 Things I Hate About You and
Bring It On. Today, Union's playing roles a little closer to her own age - although at 40, she still looks fabulous!
[Photo via]