Katy Perry "The Prismatic World Tour" - Washington D.C. [Getty Images]

WASHINGTON, DC - JUNE 24: (Exclusive Coverage; Editorial Use Only) Katy Perry performs onstage during "The Prismatic World Tour" at the Verizon Center on June 24, 2014 in Washington, DC. (Photo by Kevin Mazur/WireImage)

WireImage Kevin Mazur