PHOTO: Alec Baldwin Channels Bret Michaels
05/31/2011 AT 05:30 PM EDT
Sporting long locks and facial hair, the actor, 53, threw on a bandana and a Levi's jacket while filming a scene for the big-screen adaptation of Rock of Ages.
Director Adam Shankman Tweeted the photo of Baldwin and the flick's costar Russell Brand.
In the film, Brand's character Lonnie runs the fictional rock club The Bourbon, owned by Baldwin's character Dennis, and the pair sing REO Speedwagon's "Can't Fight This Feeling."
The movie also stars Tom Cruise, Catherine Zeta-Jones, Julianne Hough and Mary J. Blige.