Cast
Christina Aguilera (Raelene)
Cher (Tess)
Cam Gigandet (Jack)
Stanley Tucci (Manager)
Kristen Bell (Nikki)
Tyne Stecklein (Jesse)
Chelsea Traille (Coco)
Soundtrack
Singer-songwriter Sia Furler has worked with Aguilera on a song for the film. Record producer, Danja has also been working on songs for the film. The film is set to have 18 numbers, as well. Tricky Stewart has announced that he will be producing the score.
Click Link for more info: Wikipedia
Big Thanks @ xtin for the heads up!