Erika Leigh Henningsen (born August 13, 1992) is an American actress and singer. She is best known for her work on Broadway and for originating the role of Cady Heron in the 2018 Tony-nominated musical Mean Girls, for which she received an Outer Critics Circle Award nomination. It was announced that she was casted as the voice actress of Charlie Morningstar in the upcoming 2024 adult animated series Hazbin Hotel.