1. Prince William now:
Prince William when he was 20:
2. Justin Timberlake now:
Justin Timberlake when he was 20:
3. Christina Aguilera now:
Christina Aguilera when she was 20:
4. Zac Efron now:
Zac Efron when he was 20:
5. Britney Spears now:
Britney Spears when she was 20:
6. Miley Cyrus now:
Miley Cyrus when she was 20:
7. Jennifer Lawrence now:
Jennifer Lawrence when she was 20:
8. Jennifer Aniston now:
Jennifer Aniston when she was 20:
9. Leonardo DiCaprio now:
Leonardo DiCaprio when he was 20:
10. Reese Witherspoon now:
Reese Witherspoon when she was 20:
11. Sarah Jessica Parker now:
Sarah Jessica Parker when she was 20:
12. Tom Cruise now:
Tom Cruise when he was 20:
13. Will Smith now:
Will Smith when he was 20:
14. David Beckham now:
David Beckham when he was 20:
15. Mariah Carey now:
Mariah Carey when she was 20:
16. Jake Gyllenhaal now:
Jake Gyllenhaal when he was 20:
17. Tyra Banks now:
Tyra Banks when she was 20:
18. Cher now:
Cher when she was 20:
19. Freddie Prinze Jr. now:
Freddie Prinze Jr. when he was 20:
20. Sarah Michelle Gellar now:
Sarah Michelle Gellar when she was 20:
21. Blake Lively now:
Blake Lively when she was 20:
22. Prince Harry now:
Prince Harry when he was 20:
23. Lebron James now:
Lebron James when he was 20:
24. Selena Gomez now:
Selena Gomez when she was 20:
25. Justin Bieber now:
Justin Bieber when he was 20:
26. Taylor Swift now:
Taylor Swift when she was 20:
27. Ariana Grande now:
Ariana Grande when she was 20:
28. Beyoncé now:
Beyoncé when she was 20:
29. Rihanna now:
Rihanna when she was 20:
30. Paris Hilton now:
Paris Hilton when she was 20:
31. Nicole Richie now:
Nicole Richie when she was 20:
32. Hilary Duff now:
Hilary Duff when she was 20:
33. Lindsay Lohan now:
Lindsay Lohan when she was 20:
34. Ashley Tisdale now:
Ashley Tisdale when she was 20:
35. Nick Jonas now:
Nick Jonas when he was 20:
36. Joe Jonas now:
Joe Jonas when he was 20:
37. Kelly Clarkson now:
Kelly Clarkson when she was 20:
38. Mandy Moore now:
Mandy Moore when she was 20:
39. Scarlett Johansson now:
Scarlett Johansson when she was 20:
40. Anne Hathaway now:
Anne Hathaway when she was 20:
41. Emma Stone now:
Emma Stone when she was 20:
42. Chris Evans now:
Chris Evans when he was 20:
43. Michael B. Jordan now:
Michael B. Jordan when he was 20:
44. Avril Lavigne now:
Avril Lavigne when she was 20:
45. Tracee Ellis Ross now:
Tracee Ellis Ross when she was 20:
46. Baby Spice now:
Baby Spice when she was 20:
47. Ryan Gosling now:
Ryan Gosling when he was 20:
