Symphony Clean Bandit & Zara Larsson
Rihanna will headline the opening day of this year's Capital FM Jingle Bell Ball in London, it's been announced.
The singer was added to the day one line-up during Capital Breakfast this morning (31st October).
This year's event will once again take place at the O2 Arena over the weekend of the 3rd and 4th December.
Rihanna joins a line-up for the first day that already features Olly Murs, The Wanted, Pixie Lott, Calvin Harris and Jason Derulo.
The Ball will mark RiRi's eleventh performance at the O2 Arena this winter - she is currently in the middle of a record-breaking ten solo dates at the venue.
In previous years, the Jingle Bell Ball has featured performances from the likes of JLS, The Saturdays and the Black Eyes Peas.
Tickets for the 2011 Jingle Bell Ball with Windows 7 go on general sale on Monday (31st October) at 8am.
Find out how to buy your Jingle Bell Ball tickets on our ticket information page now.