Karen will play Martha, whose character details have yet to be released, while Nick, who was in talks to star in the film last month (Jul16), will reportedly play Alex.

DWAYNE 'THE ROCK' JOHNSON, Kevin Hart, and Jack Black will also star in the latest version of the beloved 1995 film, about a boy who becomes trapped in a magical board game. Dwayne has now taken to Instagram to welcome Karen to the cast.

"Between myself, @kevinhart4real Jack Black and @NickJonas we've searched far and wide to find the one person to complete our #JUMANJI family," he writes. "This isn't just any role, but in many ways the most important role of the movie. We had to find a girl. But not just any girl."

"A girl who has 'Chutzpah'," he continues. "Guts, nerve and talent to stand her ground and hold her own against Nick's cool rockstar ways, Jack's relentless energy and genius, Kevin's masterful timing and skills and the big, brown, bald tattooed guy who just simply stands there and oooooozes smoldering (sic), captivating, sizzling, can't take your eyes off this brilliant manly man... never mind I got drunk on the ol' DJ kool aid again."

"Ladies and gentlemen, I'm proud to announce a girl who's playing the most important role in our movie - the talented, beautiful and down for a Scottish fight at any time, Ms @KarenGillanOfficial...," he adds.

The film is being directed by Jake Kasdan and production is slated to begin next month (Sep16) in Honolulu, Hawaii. The film is set to be released in July, 2017.

The 1995 movie starred Robin Williams, Kirsten Dunst and Bradley Pierce.