Summer is in full swing and stars have gone global to get to work. Justin Timblerlake boarded a yacht in Puerto Rico to shoot Runner, Runner, Scarlett Johansson and Joseph Gordon-Levitt shot Don Jon's Addiction in New Jersey, and Reese Witherspoon and Mark Wahlberg both went south for their roles in Devil's Knot and 2 Guns. Click through to see more celebrities on set.
Justin Timberlake, Scarlett Johansson, Reese Witherspoon, and More Stars on Set
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