Tom Cruise, Rock Star.

The actor tweeted a photo of himself in costume (what there is of it) as the fictional heavy metal star Stacee Jaxx in 'Rock of Ages.'

To play Jaxx, he's added long hair, skintight pants, lots of tats and probably a few more hours at the gym.

Co-star Alec Baldwin, who shared a picture of himself with Russell Brand in rad '80s rock duds a few weeks ago, tweeted today that Cruise "will astonish you" in the film.

"He can sing!" Director Adam Shankman told E! News earlier this year. "It's a miracle!"

If that's true, we're totally looking forward to hearing Cruise belt out Bon Jovi's 'Wanted Dead or Alive' in the film.

See the Full Metal Cruise after the jump.