Gwen Stefani Reacts to Blake Shelton Not Recognizing "Hollaback Girl"

Gwen Stefani celebrates the end of her Las Vegas residency, Just a Girl, with a surprise for the audience, shares how her 11-year-old son infiltrated her show's backstage crew and reacts to Blake Shelton not recognizing her hit "Hollaback Girl."
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Gwen Stefani Reacts to Blake Shelton Not Recognizing "Hollaback Girl"
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