1 of 30 Jason Merritt/Getty Images
2 of 30 Jason Merritt/Getty Images
3 of 30 Jason Merritt/Getty Images
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Pattie Mallette and Justin Bieber
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9 of 30 Steve Granitz/WireImage.com
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Amy Heidemann and Nick Noonan of Karmin
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18 of 30 Jason Merritt/Getty Images
19 of 30 Jason Merritt/Getty Images
20 of 30 Jason Merritt/Getty Images
21 of 30 Jason Merritt/Getty Images
Adrian Young, Gwen Stefani, Tony Kanal and Tom Dumont of No Doubt
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24 of 30 Jason Merritt/Getty Images
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26 of 30 Jason Merritt/Getty Images
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28 of 30 Jason Merritt/Getty Images
29 of 30 Jason Merritt/Getty Images
30 of 30 Jason Merritt/Getty Images