Poehler and Fey will play sisters who are finally forced to move out of their family home when their parents decide to sell it and move into a condo. Before they go, they'll throw one last party.
Jay Roach is producing the film that is set to begin shooting in New York City in June. The film is based on a screenplay by "SNL" writer Paula Pell.
Fey is also at work on a musical adaptation of her film "Mean Girls."
Moore also staged Shrek and Steel Magnolias on Broadway, as well as the world-premiere musical Tales of the City, which features a score by Jake Shears and John Garden of the Scissor Sisters.