King Princess must be feeling fantastic.

Billboard can exclusively reveal that the singer-songwriter is a cast member of the upcoming stage production of Girl, Interrupted at The Public Theater in New York City. This will be the artist’s theatrical debut.

Previously adapted into a 1999 film of the same name starring Winona Ryder and Angelina Jolie (the role for which she won the best supporting actress Oscar), Girl, Interrupted is author Susanna Kaysen’s bestselling 1993 memoir. Girl, Interrupted follows Kaysen during an 18-month stint in a psychiatric hospital as she navigates her new life among the other patients and the doctors on staff. The stage production’s book is penned by Pulitzer Prize-winning playwright Martyna Majok and will feature original music by two-time Grammy winner Aimee Mann. King Princess will play Lisa, a fellow patient at the psychiatric hospital. Jo Bonney directs with choreography by Sonya Tayeh.

The complete cast of Girl, Interrupted at the Public Theatre is Leela Bassuk (Understudy), Ta’Rea Campbell (Valerie), Gabi Campo (Tori), Juliana Canfield (Susanna), Eileen Doan (Understudy), Mano Felciano (Man/Musician), King Princess (Lisa), Gunnar Manchester (Understudy), Mia Pak (Grace), Katherine Reis (Daisy), Anna Roman (Understudy), Sally Shaw (Polly), Emily Skinner (Dr. Wick), Rachel Stern (Understudy) and Lauren Jeanne Thomas (Judy/Musician).

Though this is King Princess’ theatrical debut, this is not her first time acting. The Brooklyn-based musician made her screen acting debut as a series regular on the second season of Hulu’s Nine Perfect Strangers and appeared alongside leads Hugh Jackman and Kate Hudson in the Oscar-nominated 2025 film Song Sung Blue. King Princess will next appear alongside Julia Fox, Este Haim and Maya Hawke in the upcoming romantic comedy One Night Only, written and directed by Will Gluck (Easy A, Friends With Benefits).

The stage production of Girl, Interrupted will begin performances in The Public’s Martinson Hall on Wednesday, May 13. The show will officially open on Thursday, June 4 and run through Sunday, June 21. Tickets are available for purchase now on The Public’s website. The National Alliance on Mental Illness of New York City (NAMI-NYC) will join forces with The Public Theater in support of this production, including a post-show talkback during June.