Schwarzenegger dons the red suit, joins stars in festive on-set snaps that give fans a behind-the-scenes peek into Hollywood's holiday spirit.
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Arnold Schwarzenegger surprised the crew by transforming into Santa Claus, adding extra holiday cheer to the set.
Celebs like Jennifer Aniston and Reese Witherspoon got in the festive mood, sharing candid photos from their own production sets that showcase the industry's yuletide vibes.
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Arnold Schwarzenegger, Jennifer Aniston, Reese Witherspoon