Don't feel badly about your awful yearbook picture. Celebrities had to go through a weird phase, too. 

 

1. The Rock

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Source: remarkablethings

2. Bill Nye

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Source: geekologie

3. Avril Levigne

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Source: blameitonthevoices

4. Russell Brand

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Source: ohnotheydidnt

5. George Clooney

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Source: Bored Panda

6. Taylor Swift

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Source: perezhilton

7. Eminem 

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Source: huffingtonpost

8. Ryan Seacrest

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Source: Bored Panda

9. Steve Carell 

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Source: rere123rere123

10. Justin Timberlake

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Source: GQ

11. Amy Poehler

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Source: jezebel

12. Tina Fey

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Source: glogster

13. Ke$ha

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Source: popdust