Katy Perry Live: Witness World Wide was a four-day YouTube live stream by Katy Perry airing between June 8-12, 2017. The special features Perry living in the Kim Sing Theatre-style house with cameras promoting her fifth studio album, Witness. It began on June 8, and concluded with a free concert on June 12 in Los Angeles.

The live stream featured Perry doing activities in the house, including eating, playing with her dogs, and sleeping as well as other moments that received large amounts of media attention. During a one-hour therapy session, Perry became very emotional as she opened up her life, including a struggle with alcohol abuse, past suicidal ideation, and her relationship with her Evangelical parents. The live stream generated over 49 million views from 190 different countries. A behind-the-scenes special for the live stream titled Will You Be My Witness? premiered on YouTube Red on October 4, 2017.

WATCH: Witness World Wide (Live)