Ariana Grande and Cynthia Erivo will star as Glinda and Elphaba respectively in the big screen version of musical Wicked.
Filming is due to begin in the UK in the summer, with director Jon M Chu in charge.
Wicked is a prequel to The Wizard of Oz and tells the story of everything leading up to Dorothy’s arrival in Oz.
It follows frenemies Elphaba, who goes on to become the Wicked Witch of the West, and Glinda the Good Witch.
The two actresses announced the news on their Instagram accounts.