The Jingle Bell Ball will be held over two days at London's O2 Arena, on Saturday 4 December and Sunday 5 December, in association with Microsoft Windows 7.
The line-up for the first day includes the Black Eyed Peas, Cee-Lo Green, The Script, The Wanted, Nicole Scherzinger, Jason Derulo, Olly Murs, Alexandra Burke, Taio Cruz and McFly.
Artists performing on the second day include Kylie Minogue, JLS, Akon, Tinie Tempah, and The Saturdays.
More acts are expected to be announced soon.
Tickets for the event go on sale on 1 November.