Singer Katy Perry is currently in the throes of one of the most bizarre publicity stunts of all time.

With her latest album, Witness, dropping a few days ago, Perry has embarked on a lengthy live stream of her life with her makeup artists, assistants, pets, chefs and a revolving door of celebrity guests.

Perry has moved her and her team into an apartment with a 41-camera set-up allows fans to tune in and watch her every move in the lead up to a live concert on Monday night US time.

She calls the apartment her Witness Worldwide Headquarters, and has had a myriad of guests, including a dinner that included the likes of Dita Von Teese, Anna Kendrick, Sia, and Wonder Woman director Patty Jenkins.