Gwen Stefani - 'Hollaback Girl'
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From Ed Sheeran To Taylor Swift - 23 Songs Written About Other Celebrities
19. Gwen Stefani - 'Hollaback Girl'
Gwen's hit song 'Hollaback Girl' came about after Courtney Love slammed her as a 'cheerleader' in a magazine interview. Gwen hit back saying that she wasn't ever a cheerleader but that she would show Courtney exactly what she could do - and brought out one of 2005's most popular songs.