In one of the most pop star-studded line-ups of recent memory, Justin Bieber, Little Mix, Calvin Harris and Ellie Goulding are among the latest massive names to be added to the Capital FM Jingle Bell Ball. Full dates and ticket details are below.
Nick Jonas, Sigma and Charlie Puth will also now be playing on the Sunday of the festival - after the previously announced Saturday line-up of Jason Derulo, Ariana Grande, David Guetta, Years & Years, Jess Glynne and Nathan Sykes.
The Jingle Bell Ball take place at The O2 Arena in London from 5-6 December. Tickets are on sale from 8am tomorrow (Friday 6 November). For tickets and more information, visit here.
We hope that Bieber will be on his best behaviour - after he stormed off stage in Norway last week, before ranting at his fans for not clapping correctly this week.