YouTube Chaka Khan has always been larger than life, and now she's got a song to match her stature in the music industry. The 73-year-old "Ain't Nobody" icon just debuted the wild, campy music video for her Sia co-penned single, "Chakzilla," released on Thursday (May 7). "When I was a kid, I really liked the Godzilla movies. When we came up with ['Chakzilla'] as a title, lots of things just ran through my head and made a lot of sense," she explained to People of the concept behind the track, produced by Greg Kurstin.