Katy Perry Katy Perry: Prismatic World Tour. Saw at the United center in Chicago twice. Aug… By Karolina Misev On Apr 18, 2018 0 Share Katy Perry: Prismatic World Tour. Saw at the United center in Chicago twice. August 2014 Source by doubledutcher1 AugCenterChicagoKatyPerryPrismaticTourUnited 0 Share