updated 04/20/2011 AT 1:00 PM ET
•originally published 04/20/2011 AT 2:05 PM ET
Catherine Zeta-Jones is back in action and looking great.
The actress, 41, who revealed that she’d been diagnosed with and treated for bipolar II disorder, is already back to work – and beaming.
She’s also already lined up her next project: Zeta-Jones has signed on to star in the film version of Rock of Ages, PEOPLE confirms. She’ll play the wife of the L.A. mayor, a conservative character who wants to do away with rock and roll, according to Deadline.com.
For much more on this story, including details of Zeta-Jones’s private struggle and how she decided to get help, pick up this week’s issue of PEOPLE, on newsstands Friday
– Dahvi Shira