Capital One Presents Z100'S Jingle Ball Lineup: Z100's Jingle Ball, The Weeknd, 5 Seconds of Summer, Hailee Steinfeld, Conrad Sewell, Shawn Mendes, Tove Lo, Fifth Harmony, DNCE, R. City, Nick Jonas, Zedd, Charlie Puth, Selena Gomez, Demi Lovato, Calvin Harris and Fetty Wap