Pop singer Gwen Stefani is taking her nine-month-old son with her on her upcoming world tour - and plans to rock him to sleep before entertaining thousands of fans each night. The No Doubt singer is currently working out the logistics of taking baby KINGSTON, her son with rocker Gavin Rossdale, on the road. She says, "He's going to be in the tour bus. We have got to figure that out. "I am going to bring my rocking chair and just rock him to sleep before I go on stage."