Line Them Up

Ariana Grande made a guest appearance on Good Morning America this morning, July 23. The young singer, who was joined by Ryan Seacrest, was on the show to announce the 2014 iHeart Radio Music Festival lineup.

Ariana, One Direction, and Taylor Swift are just some of the names that will be taking over the MGM Grand in Las Vegas on September 19 & 20. You can check out the full list of performers and how to get tickets to the event here.

Such a great list this year!