Gwen Stefani

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Gwen Stefani and No Doubt perform Ã¬Looking HotÃ® at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

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Gwen Stefani and No Doubt perform Ã¬Looking HotÃ® at the 40th Annual American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

Musical group No Doubt, from left, Adrian Young, Gwen Stefani, Tony Kanal and Tom Dumont arrive at the 40th Anniversary American Music Awards on Sunday, Nov. 18, 2012, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

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Gwen Stefani, singer of US band No Doubt, performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)

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Gwen Stefani, center, performs with her band No Doubt during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)

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Gwen Stefani and No Doubt have pulled their new cowboys-and-Indians-themed music video and are apologizing to those offended by it. (Associated Press)

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** FILE ** In this Sept. 25, 2009, file photo, Gwen Stefani, left, and Tony Kanal from the U.S. band No Doubt perform at the F1 Rocks concert in Singapore. (AP Photo/Joan Leong, file)

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From left, Gabriel McNair, Tony Kanal, Gwen Stefani and Jim Guerinot walk the red carpet at the Kennedy Center Honors in Washington on Sunday, Dec. 5, 2010. (AP Photo/Jacquelyn Martin)

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Designer and recording artist Gwen Stefani poses with her current L.A.M.B. fashion collection during fashion week on Wednesday, Sept. 15, 2010 in New York. (AP Photo/Evan Agostini)

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Designer Gwen Stefani acknowledges the audience after the L.A.M.B. spring 2011 collection show Thursday, Sept. 16, 2010, during Fashion Week in New York. (AP Photo/Jason DeCrow)