Gwen Stefani D Squared leather jacket hat sunglasses car studio

Gwen Stefani doesn't let a busy day at the studio get in the way of looking oh-so-fashionable. We love her new Porsche Panamera, too!

The No Doubt singer ... rocking a stylish paper boy cap, leather jacket and peep toe booties, arrived at a Santa Monica recording studio ready to put the finishing touches on her band's upcoming album.

Kingston and Zuma's mama manages to successfully balance both her career and family life. What a rock star!