Cyrus and Gaga weren't the only stars to be impersonated in the video. Deceased celebrities Kurt Cobain, Andy Warhol and Marilyn Monroe also make an appearance.
"We wanted to tackle the speculatory obsession we have with celebrity culture. We crave scandal and feast on tales of decadence," Finn told PAPERmagazine.
"Who's doing who? Who's going off the rails? Do the Elite belong to the Illuminati and what are they doing behind closed doors? ... Perhaps we don't even scrape the surface and the truth is even more dark and wild than we can imagine."
The song features on Finn's new album, Nihilist, which is out now.
Watch the music video for Helena Bonham Carter by Liam Finn:
App users: Tap here to view the music video
- nzherald.co.nz