Hart is set to make her West End debut in June
Full casting has been announced for Annie which will open at the Piccadilly Theatre in June.
Joining the previously announced Miranda Hart as Miss Hannigan will be Alex Bourne (Mamma Mia!) as Daddy Warbucks, Holly Dale Spencer (Sweet Charity) as Grace Farrell, Jonny Fines (Grease) as Rooster and Djalenga Scott (Grease) as Lily.
The title role will be shared by three actors, 13 year-old Madeleine Haynes, and 12 year-olds Lola Moxom and Ruby Stokes.
Annie's dog Sandy will be played by a 4 year-old Labradoodle called Amber.
Hart will make her West End debut in Nikolai Foster's production which has a book by Thomas Meehan music by Charles Strouse and lyrics by Martin Charnin.
The ensemble includes Keisha Atwell, Sophie Ayers, Bobby Delaney, Nic Gibney, Patrick Harper, Ben Harrold, George Ioannides, Megan Louch, Benjamin Mundy, Ben Oliver, Heather Scott-Martin, Anne Smith, Kate Somerset How, Katie Warsop and Russell Wilcox.
Annie is based on the comic strip Little Orphan Annie, and the musical is follows Annie during the Great Depression in '30s New York as she is forced to live a life of misery in Miss Hannigan's orphanage. The score includes the songs such as "It’s A Hard Knock Life", "Tomorrow" and "Easy Street".
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Annie will run at the Piccadilly Theatre from 5 June 2017 to 6 January 2018, with previews from 23 May.