Christina Aguilera debuts some purple streaks

"The Voice's" Christina Aguilera speaks onstage during the NBCUniversal's "The Voice" press junket on Aug. 12, 2012, in Los Angeles.
Christopher Polk/Getty Images

(CBS News) Christina Aguilera decided to spice her her 'do adding purple streaks to her signature platinum blonde locks.

Pictures: Christina Aguilera

The 31-year-old singer showed off her new look on Sunday at a media event for "The Voice," where she and fellow judges Blake Shelton, Cee Lo Green and Adam Levine talked about the show's new season.

At the event, "The Voice" announced that it will add "battle rounds," which will let coaches "steal" contestants from each other. The show also will introduce a new "knockout round" to slice the number of contestants on each coach's team

The series third season kicks off Sept. 10.


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