Backstreet Boys and Westlife have been unveiled as the final two acts to play Capital FM’s Jingle Bell Ball.

The announcement was made by Johnny Vaughan and Lisa Snowdon on the station’s breakfast show today.

Westlife are due to join the likes of Lady GaGa, Miley Cyrus, JLS and Lily Allen to perform on the first night of the bash on December 5.

Meanwhile, the Backstreet Boys have been added to the second show’s lineup on December 6, appearing alongside Ne-Yo, Dizzee Rascal, Alesha Dixon and Janet Jackson.

The Capital FM Jingle Bell Ball is in support of the Help A London Child charity. A donation will be made to the organisation from the proceeds of the event. [Source]