Gwen Stefani, Jimmy Fallon and The Roots sang 'Hollaback Girl' on classroom instruments during the Nov. 26 episode of 'The ...

The singer revisited the iconic hit from her 2004 debut solo album on Tuesday night's (Nov. 26) "Tonight Show." ...

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

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 ...

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

26) "Tonight Show." By Gil Kaufman Gwen Stefani jumped in the wayback machine on The Tonight Show on Tuesday night (Nov. 26) when she joined host Jimmy Fallon and house band The Roots for a run ...

The singer released her fourth solo studio album 'Bouquet' earlier this month Todd Owyoung/NBC via Getty Jimmy Fallon, Gwen Stefani and The Roots on 'The Tonight Show Starring Jimmy Fallon' Gwen ...