During the weekend of the release of "Witness", Perry partnered with YouTube and held a 96-hour livestream event called "Witness World Wide". In the stream, Perry was recorded over four days throughout her daily life in a house she rented in Los Angeles. She held segments which featured celebrities, like British talk show host James Corden, "Huffington Post" founder Arianna Huffington, and YouTuber Gigi Gorgeous. Perry could also be seen crying in a therapy session. She claimed she got rid of her long, dark hair in favor of a new, short and blonde hairdo at a time where she questioned whether she still wanted her fame and did not "want to be Katy Perry anymore." The livestream gained over 49 million views on YouTube. In 2018, Perry became a judge in American Idol, a job she had previously refused.