The Jingle Ball " tour this holidays season will include Justin Bieber, Bruno Mars and Britney Spears, among others. IHeartMedia announced Tuesday that the tour will kick off November 29th in Dallas. The lineup, which varies by city, includes Ariana Grande, Fifth Harmony, Meghan Trainor, Backstreet Boys, The Chainsmokers, Shawn Mendes, One Direction's Niall Horan and others. The December 9th show at New York's Madison Square Garden will stream live on The CW Network's app and website. It will air as a 90-minute special on the channel on December 15th.