Gwen Stefani and Gavin Rossdale were inseparable as they posed for pictures on the red carpet last night at the Heart Foundation Gala. The organization raises money to help research and fight heart disease, and the charitable evening included a performance by Michael Bublé, with Ryan Seacrest handling MC duties. Gavin and Gwen stepped out in support of the cause alongside stars including Chelsea Handler. Gavin took advantage of a 10-day break from playing with Bush to spend the evening with his wife. The band will make several stops in Canada, along with the Midwest and Northwest, before wrapping up their latest tour late next month. In the Fall, it will likely be Gwen's turn to hit the road. No Doubt's reunion album will hit shelves on Sept. 25, the band announced last week, and the foursome are expected to tour widely in support of the new CD.