This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!
21 Celebrities Who Are Younger Than You Thought
Get ready to feel real old, real fast.
-
1. Miley Cyrus
19
-
2. Taylor Momsen
18
-
3. Heidi Montag
25
-
4. Kelly Pickler
25
-
5. Julianne Hough
23
-
6. Hillary Scott (from Lady Antebellum)
25
-
7. Keira Knightley
26
-
8. Adele
23
-
9. Lady Gaga
25
-
10. Katy Perry
27
-
11. Dakota Fanning
17
-
12. Seth Rogen
29
-
13. Abigail Breslin
15
-
14. Angelina Jolie
36
-
15. Saoirse Ronan
17
-
16. Hailee Steinfeld
14
-
17. Taylor Lautner
19
-
18. Emma Stone
23
-
19. Florence Welch
25
-
20. Alex Pettyfer
21
-
21. Olivia Wilde
27
Want to get your very own quizzes and posts featured on BuzzFeed’s homepage and app?
Become a Community Contributor.
Become a Community Contributor.