Gwen Stefani's "Hollaback Girl" is a sassy spelling lesson, so it's fitting that she'd finally take it into the classroom. In a video from November 26, Stefani joined Jimmy Fallon and The Roots 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 foot ...

Rocker turned fashionista, Gwen Renée Stefani ... The third single Hollaback Girl was a very successful international single, and became the first U.S. digital single to exceed sales of one million.

All the latest from American singer, songwriter, fashion designer and record producer Gwen Stefani ... hit singles What You Waiting For? and Hollaback Girl. She was previously married to English ...