Katy Perry: Part of Me 127 concerts from February 20, 2011 to January 22, 2012. Most of the performances were recorded on November 23, 2011, at the Staples Center in Los Angeles, but also included performances in Tokyo and São Paulo. Some of her friends such as Rihanna, Lady Gaga, Adele and Jessie J make cameos in the film. The documentary includes scenes of Perry dealing with the breakdown of her marriage with English actor/comedian Russell Brand. Principal cast Cameos On March 7, 2012, Katy Perry announced via Twitter that she and Paramount Pictures would release a part-biopic, part-concert film entitled "Katy Perry: Part of
Katy Perry Live: Witness World Wide like Katy Perry anymore." Perry received mixed responses from critics for "Witness World Wide". Joey Pucino of "The Sydney Morning Herald" called it a "bizarre publicity stunt." Journalist Amanda Petrusich called it "tedious" and dubbed her therapy breakdown "premeditated," writing in "The New Yorker", "Every moment of "Witness Worldwide" I saw felt heavy with promotional intention, and low on spontaneity or frankness—which is also what makes the album itself a slog." Others applauded her honesty. In the "Australian Daily Telegraph", Sarah Daffy praised Perry and dismissed her critics. Daffy addressed the reality of mental health and suicide in Australia, and