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WESTWOOD, CA - JULY 27: Actors Liam Hemsworth and Chris Hemsworth attend the premiere of Warner Bros. Pictures 'Vacation' at Regency Village Theatre on July 27, 2015 in Westwood, California. (Photo by Kevin Winter/Getty Images)

WESTWOOD, CA - JULY 27:  Actors Liam Hemsworth and Chris Hemsworth attend the premiere of Warner Bros. Pictures 'Vacation' at Regency Village Theatre on July 27, 2015 in Westwood, California.  (Photo by Kevin Winter/Getty Images)