21 of your favorite child actors then and now.

Well. They grew up.

7. Justin Timberlake

Justin Timberlake

8. Drew Barrymore

Drew Barrymore

9. Anna Paquin

Anna Paquin

10. Mary-Kate and Ashley Olsen

Mary-Kate and Ashley Olsen

11. Frankie Muniz

Frankie Muniz

12. Britney Spears

Britney Spears