The unusual collaboration is destined for the soundtrack to the film 'All That Glitters'...
'Glitter' provides the musical backdrop for the warbler's forthcoming film 'All That Glitters'...
The diva will play a waitress -presumably in an establishment without stairs. Mariah doesn't 'do' stairs...
The 31-year-old singer says "Hallelujah" without warbling once...
The star's reported offer from Virgin could earn her up to £60 million...
The star is said to be looking for a new #20 million deal...