POTW: Beyonce, Steven Tyler, Gwen Stefani, Katy Perry, Flavor Flav

May 3: Beyonce surprises students in Harlem as part of Michelle Obama's 'Let's Move' initiative.

Beyoncé shows us how to 'move,' Steven Tyler steals hearts, Gwen Stefani takes a stroll with the kiddies, Katy Perry purrs, Flavor Flav gets locked up, and Cyndi Lauper feeds a pup. It all happened this week and we've got the pics to prove it.

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

1. Mariah Carey, Nick Cannon Reveal Twin Baby Names

2. Royal Wedding Playlist: Songs for Kate and William

4. Jennifer Lopez 'Love?': Track-by-Track Review

5. Katy Perry Holds Off Britney Spears Atop Hot 100