Openers for the four-month trek include Capital Cities, Kacey Musgraves and Tegan and Sara. Perry previously performed with Musgraves and Tegan and Sara at last year's We Can Survive benefit concert, thrown by Radio.com and our L.A. station AMP Radio 97.1 to raise money for the Young Survival Coalition, an organization supporting young women battling breast cancer.

"The Prismatic World Tour is coming to light up some of my favorite North American cities this summer, as well as some new cities that you introduced me to through your video requests," Perry said in a statement.