Girls Aloud are set to sing at the Jingle Bell Ball.
The reunited girl group - Cheryl Cole, Kimberley Walsh, Nadine Coyle, Sarah Harding and Nicola Roberts - will wow the crowds on the second day of the pop extravaganza, which takes place at London's O2 Arena on December 8 and 9.
They will be joined by a star-studded line-up including Pink, The Wanted, Rita Ora, Calvin Harris, Conor Maynard and Example.
Cheryl will also perform her solo material on day one of the music event, alongside One Direction, Bruno Mars, JLS, Lawson, Little Mix, The Script and Rizzle Kicks.
Tickets for the second day sold out within two hours of going on sale, although tickets are still available for competition winners.
Ashley Tabor, Global's Founder & Executive President said: "Selling out both days in a matter of hours is incredible."
The Jingle Bell Ball, now in its fifth year, supports Capital FM's flagship charity, Help A Capital Child.