Jamie FoxxJamie Foxx will host the 2015 iHeartRadio Music Awards on Sunday, March 29. The three-hour show will air on NBC from 8-11pm ET/PT from the historic Shrine Auditorium in Los Angeles and will be broadcast simultaneously on iHeartMedia stations and across the iHeartRadio digital music platform. The Oscar and Grammy-winning Foxx will also perform during the broadcast, as will Rihanna, Iggy Azalea, Sam Smith, Madonna, Jason Aldean, Meghan Trainor, Jason Derulo, Jennifer Hudson, Kelly Clarkson, Snoop Dogg, Nate Ruess, Alesso and Florida Georgia Line. Look for special appearances from Taylor Swift and others.