Another 'Idol' Lands Dream Role

One day she's a nobody, the next day she's an "American Idol," and then all of the sudden she's starring in "Dreamgirls" ... no, not Jennifer Hudson ... Syesha Mercado.

Sources say the season seven "Idol" contestant has been cast in the upcoming international tour of "Dreamgirls" the play -- landing the role of Deena Jones, who was played by Beyonce in the movie.

Calls to Syesha's rep have not been returned.