Kelly Clarkson has joined the cast of 'Trolls World Tour'.

Kelly Clarkson

Kelly Clarkson

The 36-year-old singer is set to star in the DreamWorks movie, a sequel to 2016's 'Trolls', alongside fellow franchise newcomers Jamie Dornan, Anthony Ramos, Karan Soni, Flula Borg, Sam Rockwell, and Chance the Rapper.

According to Deadline, Clarkson will take on the role of Country Trolls mayor Delta Dawn, and she will sing an original song in the motion picture.

Justin Timberlake - who received a Best Original Song Oscar nomination for tune 'Can't Stop the Feeling' from 'Trolls' - is to reprise his role as Branch in the sequel, alongside the likes of Anna Kendrick (Poppy), and James Corden, who will return as Biggie.

Aino Jawo (Satin), Ron Funches (Cooper), Caroline Hjelt (Chenille), and Kunal Nayyar (Guy Diamond) will also reprise their roles in the upcoming movie.

The film will tell the story of the trolls of Troll Town who are shocked to discover there are other trolls beyond their world, each defined by a genre of music.

Branch, Poppy and their pals will head off into the unknown world to try to unite themselves with the diverse characters.

Walt Dohrn and David P. Smith will co-direct the motion picture, which is slated for release in April 2020. Gina Shay will produce the project.

Timberlake admitted in 2016 that his son Silas, who is now three, was a huge fan of the film.

He said: "I got to screen it before anybody. I had to screen it before everybody because I had to make sure all the music was working out.

"He knows all the characters already! It's crazy!"

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