Invite Only – dick clark productions and ABC announced today that international music superstar Jennifer Lopez will host and perform at the “2015 American Music Awards.” As previously announced, music stars Joe Jonas and Charlie Puth will appear live on ABC’s “Good Morning America” on Tuesday, October 13 to announce nominees in six categories for the “2015 American Music Awards.” Immediately following the broadcast, five additional categories will be announced exclusively via Snapchat (TheAMAs) in real time.