Mills, who worked with Hastie in Hamlet at the National Theatre, said she “can’t wait” to reunite with the director.
“My first show I ever did at the National was in the Dorfman Theatre so to be returning to that beautiful space over Christmas followed by a tour around England – I’m truly over the moon,” she added.
The production is said to be a “joyful, tender and bittersweet celebration of music, ambition and the courage it takes to be heard”.
It will feature music from the likes of Judy Garland and Dame Shirley Bassey.
Halfpenny said she was “so excited” to play Mari Hoff in the “beloved Northern play”.
She added: “I have long admired Jim’s work and to get the opportunity to play this role at the National Theatre and at theatres across England this winter is very special.”
