On Vacation: Chris Hemsworth and Christina Applegate

Chris Hemsworth and model Elsa Pataky attend the premiere of Warner Bros. "Vacation" at Regency Village Theatre. (AFP/Getty)

Elsa Pataky and Chris Hemsworth (AP)

Liam Hemsworth and Chris Hemsworth (AFP/Getty)

Chris Hemsworth, Luke Hemsworth and Liam Hemsworth (AFP/Getty)

(AFP)

Writer/director/producer Jonathan Goldstein, actors Chevy Chase, Beverly D'Angelo, Christina Applegate, Ed Helms, Steele Stebbins, writer/director/producer John Francis Daley, actors Catherine Missal, Skyler Gisondo, producer Chris Bender and Chris Hemsworth attend the premiere of Warner Bros. "Vacation" (AFP/Getty)

Hemsworth signs autographs at the premiere of Warner Bros. "Vacation" (AFP/Getty)

(AFP/Getty)

Chevy Chase, Beverly D'Angelo, Christina Applegate, Steele Stebbins, Skyler Gisondo take a selfie with Ed Helms during the premiere of Warner Bros. "Vacation" (AFP/Getty)

Chris Hemsworth and Christina Applegate (AP)

Steele Stebbins, from left, as Kevin Griswold, Leslie Mann as Audrey Crandall, Christina Applegate as Debbie Griswold, and Skylar Gisondo as James Griswold, in a scene from New Line Cinema's comedy "Vacation," a Warner Bros. Pictures' release. (AP)

Chris Hemsworth, left, as Stone Crandall, and Ed Helms as Rusty Griswold, in a scene from New Line Cinema's comedy "Vacation," a Warner Bros. Pictures' release. (AP)

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