Stefani, 55, aptly used a banana as a microphone. Fallon, 50, started with a kazoo and banged on a drum. The Roots also ...

Magazine. Todd Owyoung/NBC via Getty Gwen Stefani ain't no hollaback girl. On Tuesday, Nov. 26, the "Cool" singer, Jimmy Fallon and The Roots jammed out to her 2004 hit song "Hollaback Girl" on cl ...

Gwen Stefani ain't no hollaback girl. On Tuesday, Nov. 26, the "Cool" singer, Jimmy Fallon and The Roots jammed out to her 2004 hit song "Hollaback Girl" on classroom instruments — and it was ...

The Tonight Show just debuted a new installment of Jimmy Fallon's popular “Classroom Instruments” series—this time with Gwen ...

While it’s unquestionably currently pumpkin spice season, Gwen Stefani had another flavor in mind during her recent ...

Gwen Stefani's "Hollaback Girl" is a sassy spelling lesson, so it's fitting that she'd finally take it into the classroom. In ...

Gwen Stefani stepped into a time machine with Jimmy Fallon and the Roots on The Tonight Show to perform her 2005 hit “Hollaback Girl.” Using a banana as a microphone, The Voice host sang the ...

Gwen Stefani performs stripped-down version of solo hit 'Hollaback Girl' on classroom instruments with Jimmy Fallon and the Roots on 'Tonight Show.' ...

Gwen Stefani and The Roots on 'The Tonight Show Starring Jimmy Fallon' Gwen Stefani ain't no hollaback girl. On Tuesday, Nov. 26, the "Cool" singer, Jimmy Fallon and The Roots jammed out to her 2004 ...