Prince William when he was 20:
Justin Timberlake when he was 20:
Christina Aguilera when she was 20:
Zac Efron when he was 20:
Britney Spears when she was 20:
Miley Cyrus when she was 20:
7.
Jennifer Lawrence now:
Jennifer Lawrence when she was 20:
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:
Tom Cruise when he was 20:
Will Smith when he was 20:
David Beckham when he was 20:
Mariah Carey when she was 20:
Jake Gyllenhaal when he was 20:
Tyra Banks 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:
Blake Lively when she was 20:
Prince Harry when he was 20:
Lebron James when he was 20:
Selena Gomez when she was 20:
Justin Bieber when he was 20:
Taylor Swift when she was 20:
Ariana Grande when she was 20:
Paris Hilton when she was 20:
Nicole Richie when she was 20:
Hilary Duff when she was 20:
Lindsay Lohan when she was 20:
Ashley Tisdale when she was 20:
Nick Jonas when he was 20:
Joe Jonas when he was 20:
Kelly Clarkson when she was 20:
Mandy Moore when she was 20:
39.
Scarlett Johansson now:
Scarlett Johansson when she was 20:
Anne Hathaway when she was 20:
Emma Stone when she was 20:
Chris Evans when he was 20:
43.
Michael B. Jordan now:
Michael B. Jordan when he was 20:
Avril Lavigne when she was 20:
45.
Tracee Ellis Ross now:
Tracee Ellis Ross when she was 20:
Baby Spice when she was 20:
Ryan Gosling when he was 20: