In a report by THR, the Tony Award-winning actress will join a roll call that includes Emma Watson, Dan Stevens, Luke Evans and Josh Gad in the live-action film, which would be directed by Bill Condon.
In Beauty, McDonald will be playing Garderobe, the French word for wardrobe, whom along with Mrs. Potts, a kettle, assists Belle-which is played by Emma Watson- in her initial loneliness and takes part in the "Be Our Guest" showstopper.
The character also sings a solo as part of "Human Again," a song which was deleted from the 1991 movie but later added to the 2002 special-edition DVD.
Production begins in May 2015 at Shepperton Studios in London.
McDonald is a stage star who has won acclaim for both her vocal and dramatic chops, reflected in her Tony wins.