In 2003, she debuted her clothing line L.A.M.B. and expanded her collection with the 2005 Harajuku Lovers line, drawing inspiration from Japanese culture and fashion. Stefani performs and makes public appearances with four back-up dancers known as the Harajuku Girls dancers. She married British grunge musician Gavin Rossdale in 2002 and they have two sons: Kingston James McGregor Rossdale, who was born May 26, 2006, and Zuma Nesta Rock Rossdale, who was born August 20, 2008. Billboard magazine named Stefani thirty-seventh Hot 100 artist of the decade. Stefani was ranked the 54th best artist of the 2000–10 decade by Billboard.
With Stefani promoting her second solo album, No Doubt began initial work on a new album without her and planned to complete it after Stefani's tour was finished. In March 2008, the band started making posts concerning the progression of the album on their official fan forum. Stefani made a post on March 28, 2008 stating that songwriting had commenced but was slow on her end because she was, at the time, pregnant with her second child.
Manager Jim Guerinot said the yet-untitled album is being produced by Mark "Spike" Stent, who helped produce and mix Rock Steady. Between Stefani's pregnancy and recording, No Doubt did not tour in 2008, but Guerinot promised they plan to hit the road hard in 2009 for their first full-fledged band tour in nearly five years.
"The Singles 92-03" became available on December 9, 2008 for the Rock Band 2 video game platform. All members of No Doubt except for Stefani are appearing as Scott Weiland's backing band on the album Happy In Galoshes.
No Doubt announced on their official website they wanted to tour in 2009 while finishing their upcoming album, which is set for release 2010. On November 24, 2008, it was announced that No Doubt would be headlining the Bamboozle 2009 festival in May, along with Fall Out Boy. The band completed a national tour in the summer of 2009.
