There's not much territory that Rihanna has yet to cover, having just come off of her first acting gig in "Battleship." Although the film flopped, the pop star has recently been cast as the lead voice in the upcoming animated DreamWorks film "Happy Smekday!" Rih Rih and actor Jim Parson ("The Big, Bang Theory") have been officially attached to the movie, which is an adaption of the best selling book "The Makings of Smekday" written by Adam Rex.

According to sources, the synopsis of the film is as follows:

"… a friendly alien race [that] invades Earth and uses it as a hideout from their mortal enemy. When one lowly alien accidentally notifies the enemies of his whereabouts, he is forced to go on the run with a teenage girl, embarking on a comical road-trip across a post-apocalyptic America and learning what it really means to be human." 

DreamWorks plans to release the film in early 2014.