Sean Parker And The Parker Foundation Launch The Parker Institute For Cancer Immunotherapy Gala - Arrivals [Getty Images]

LOS ANGELES, CA - APRIL 13: Singer Katy Perry arrives at Sean Parker And The Parker Foundation Launch The Parker Institute For Cancer Immunotherapy Gala on April 13, 2016 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)

FilmMagic Jon Kopaloff