ON SALE NOW: Tickets to see @KatyPerry: THE LIFETIMES TOUR at @UnitedCenter on May 12! Get ready to sing all the #KatyPerry hits with a game of #KatyPerryoke with Chicago award-winning singer @KeyaTrammell. Get tickets for THE LIFETIMES TOUR now at unitedcenter.com #Chicago #KatyCats #THELIFETIMESTOUR