Katy Perry hits the rodeo! Britney Spears goes for a ride with DJ Pauly D! See how the stars spent the hot summer months
Credit: Courtesy Justin Bieber
Updated: Monday Sep 12, 2011 | 06:00 AM EDT
By: Cara Lynn Shultz
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He's on a boat ... planking! The singer joined Rev Run's son, Diggy Simmons, to show off the pose of the summer, taking part in a little waterside planking. See Katy Perry, Hilary Duff and more stars planking and acting up online!
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