Celebrities always find ways to surprise us. Sometimes with just the years they were born. Here are 20 celebrities who still haven't celebrated their 21st birthdays yet.
Say what? Kate Upton seems way older than 20.
Miley is no longer a tween or teen and only now just entering her twenties, believe it or not.
She just started her twenties and has lived more than most twenty somethings.
The It model of the moment and she's not even 21 yet.
Guarantee didn't have a lock on your style like Willow does�and she's not even a teenager yet.
It seems like only yesterday this 19-year-old was on "True Jackson, VP." Now, she's channelling Chili in the upcoming VH1 biopic of TLC.
Way too cool to be a sophomore in high school.
At 19 years old, Saoirse is already fronting a Stephenie Meyer franchise and a critic's darling thanks to starring in films like "Atonement" and "Hanna."
With a voice equal parts commercial and mature, she definitely has a long career ahead of her.
With the adolescence she's had, you'd think she was older than 20.
He may be under 21, but he definitely prefers a much older woman.
Jaden's parents Will and Jada treat him like he's an legal adult.
The indie actor brings a thoughtfulness to his role far beyond his years.
Always surprising to learn when a supermodel isn't even of legal drinking age yet.
Her acting talent is superior to contemporaries twice her age.