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9 December 2012, 10:01
Rita Ora, Conor Maynard and The Wanted will also take to the stage at the O2 Arena in London today (9th December).
Pink and Girls Aloud will play the second and final night of this year's Jingle Bell Ball in London tonight (9th December).
The event at the O2 Arena will also feature performances from The Wanted, Conor Maynard, Rita Ora, Calvin Harris and Example.
The Jingle Bell Ball will mark Girls Aloud's first arena show since their announced their reunion and wil serve as a warm-up for their 2013 UK tour.
Speaking to Capital FM about her performance at the Ball, Rita Ora said: "I don't know, because you never know what to expect!"
"[I'm] so overwhelmed, and I never, ever forget how important it is that my track is being played by you guys and my fans are loving it."
"That's all I care about, so thank you guys!" Rita added, as a message to her fans for their support.
The Wanted, who have performed at the Jingle Bell Ball before, said they were delighted to be returning to the O2 Arena again today.
"Being there, it's so exciting because you do still get excited to see other artists and see what they're going to do," Jay McGuiness exclusively told Capital. "You do compare and contrast and think, 'How do we compare to them?'"
Keep your eyes and ears on the ball by visiting our special Jingle Bell Ball area as we come live from this year's event across the weekend.
You can see all the latest news, pictures, interviews and watch this year's performances on Capitalfm.com - follow the action in real time on our Saturday live blog.
Join the conversation about this year's Jingle Bell Ball by following @CapitalOfficial on Twitter with the hashtag #CapitalJBB and liking us on Facebook.