Gwen Stefani & No Doubt: Back in the Studio!

Gwen Stefani rocks her hair to one side while leaving the surprise Rolling Stones concert on Saturday (April 27) at Echoplex in Hollywood.

The day before, the 43-year-old rocker kept a low profile under a beanie hat and sunglasses while heading to the studio to work with her band No Doubt.

Gwen tweeted out a photo of herself sitting in the studio with Tony Kanal, Tom Dumont, and Adrian Young with the caption, “Family portrait April 26, 2013.” Can’t wait to hear the new music!

15+ pictures inside of Gwen Stefani at a concert and the studio…