Photos of the Year 2011
May 12: Katy Perry tweets "sucking face with a kanga. yep." as she kisses a kangaroo.

Katy Perry plants a smooch on a furry friend, Bono, of U2, pops bottles for his 51st birthday, Justin Bieber power kicks and Usher rocks the stage. It all happened this week and we've got the pics to prove it.

SEE THE PHOTOS OF THE WEEK

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News of the Week: Billboard's 5 Most Popular Stories

1. Vote for the Billboard.com Fan Favorite Award

2. Beyonce Q&A: The Billboard Music Awards Millennium Artist Discusses Her Career and New Album

4. Lady Gaga's 'Edge of Glory' Single Premieres, 'Hair' Coming Next Week

5. The Lonely Island 'Turtleneck and Chain': Track-by-Track Review

Questions? Comments? Let us know: @billboard

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