Music
Rex Features
The two acts will join JLS, Lady GaGa, Tinchy Stryder, Lily Allen, Noisettes, Pixie Lott and Taio Cruz at the event, which takes place at London's O2 arena.
The Jingle Bell Ball supports Capital FM's flagship charity Help A London Child, with a donation being made from the proceeds of the event.
Last year's Ball saw performances from Pussycat Dolls, Boyzone, Alphabeat, James Morrison, Craig David, Sugababes and Will Young.
Singles Reviews
will.i.am ft. Jennifer Lopez, Mick Jagger: 'T.H.E' reviewCould this be the collaboration to end all collaborations?
The Sound
Ones To Watch: Niki & The DoveWe get to know the Swedish duo ahead of the debut album.
Music Interviews
Sleigh Bells talk 'Reign of Terror'Sleigh Bells talk to Digital Spyabout noisepop, Twitter and their new album.
Album Reviews
Goldfrapp: 'The Singles' reviewGoldfrapp cement their position as one of the decade's finest pop acts.
