Get your tickets now for the concert of the year, KIIS-FM's annual Jingle Ball. Past headliners at this super show have included Taylor Swift, Ed Sheeran, Demi Lovato, Britney Spears, Bruno Mars, Ariana Grande, Meghan Trainor, The Weeknd, Selena Gomez, and more! 2018 Jingle Ball lineup and details will be available closer to December.