"It's pure joy"

Arnold Schwarzenegger greying with dignity for movie

Arnold Schwarzenegger (right) plays Santa Claus instead of the Terminator - to the delight of his fans.(Bild: Instagram.com/schwarzenegger)

Did you recognize the supposed grandpa in the picture on the right with the white hair and white beard? That's right, it's actually Arnold Schwarzenegger. For his latest role in the film "The Man with the Bag", the 77-year-old has turned gray with dignity.

The Terminator plays Santa Claus in the family comedy, as he let his 26 million fans know in a new Instagram post: "Santa Claus is coming to Town!"

The snapshot was taken on set and shows Arnie with his co-star Alan Ritchson (known from the series "Reacher").

According to the official description from producer Amazon Studios, Santa's magic sack is stolen in the film. To get it back, Santa finds the thief Vance on his list of naughty children.

"The work is pure joy"
 "To save Christmas, Vance must pull off the most daring heist of his life with the help of his daughter, Santa and a group of strange characters." Schwarzenegger revealed that the shoot will take place in the Big Apple: "New York City is a great host and a pure joy to work with. I can't wait to share this Christmas joy with each and every one of you!"

"The Man with the Bag" is not the first Christmas comedy in which "Arnie" has starred. In 1996, he provided laughs in "Jingle All the Way".