White buddies up with Derek Hough in L.A. Plus: Kim Kardashian, Matthew & Camila, Beyoncé and more
Credit: Blue Wasp/Grey Wasp/Splash News Online
Updated: Tuesday Apr 10, 2012 | 05:00 PM EDT
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A giddy Rihanna and her Battleship costar Brooklyn Decker (not pictured) continue enjoy Aussie hospitality, heading out for a cruise along Sydney Harbour on Monday.
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