The musician and YouTuber will play the part of Veronica in the West End production.
In a post on Instagram, Carrie said: “September 1st, 1989. Dear diary… from June 9th – August 4th I’ll be playing Veronica Sawyer in Heathers the Musical at [The Other Palace]! So excited to get into that blue blazer!”
Based on the 1988 film, Heathers the Musical features Veronica as “another of the nobodies dreaming of a better day”.
“But when she’s unexpectedly taken under the wings of the three beautiful and impossibly cruel Heathers, her dreams of popularity finally start to come true.
“Until JD turns up, the mysterious teen rebel who teaches her that it might kill to be a nobody, but it’s murder being a somebody,” the play description reads.
The news comes after Carrie won Best Actress in a Musical at the WhatsOnStage Awards in February for her performance as Wednesday Addams in the adaptation of The Addams Family.
Heathers the Musical will run from Saturday, 9 June to Saturday, 4 August and tickets are available now on The Other Palace’s website.