Four lucky fans were selected to be 'VIPs For A Day' at the 2015 iHeartRadio Music Festival. Here is their summary of the weekend! Featuring Kanye, COLDPLAY, Jason Derulo, J.Lo, Puff Diddy, Tori Kelly, Sam Smith, The Weeknd, Fall Out Boy, Prince Royce, Demi Lovato and WAY more of your fav artists!