Katy Perry prepares for big gigs by reading out random prayers.
The pop star gathers her band and dancers before heading out on stage and reads out musings from a box she updates daily on tour.
The Firework singer explains, "I have this little box of prayers, but they're very small, simple one-line prayers, and I pull them out and read them out loud, and everybody either agrees or disagrees with them, and then we put our hands in a pile and dedicate the show to something funny or stupid."
She tells Entertainment Weekly magazine, "When we were in Nottingham (England), we dedicated the show to Robin Hood."