Surprise guests, chilling with Cheryl in the studio and sneak peaks inside dressing rooms. It's all in our Jingle Bell Ball 2012 backstage picture gallery.
Bruno Mars Excited For Jingle Bell Ball 2012: "You Won't Get Us Off Stage!" - Video
The 'Grenade' singer says he and his band will be bringing all their best dance moves to the show.
Bruno Mars says he and his band "can't help" but dance when they get on stage, and has joked that they are so excited about playing the Capital FM Jingle Bell Ball 2012 that they don't want their set to end.
The 'Locked Out Of Heaven' singer says all the members of his band "love the spotlight", and says they are all hyped up for today's Capital FM event at the O2 Arena, which marks his first big performance in some time.
"I don't know if people know this but I picked each one of these guys from the circuit, like just knowing a couple of dudes," Bruno revealed to Capital at today's event, when asked about his band. "I picked each guy and I got so lucky because they all love the spotlight, and they're all surprisingly good dancers!
"You know what, we haven't played a show, especially to this extent, for a very long time, so I don't know if you're going to get us off the stage tonight!" Bruno added.
Check out a picture of Bruno Mars talking to Capital FM at the Jingle Bell Ball today below:
The Capital FM Jingle Bell Ball 2012 launches today (8th December) with a day one line-up of JLS, Rizzle Kicks, Lawson, Little Mix, One Direction, Cheryl Cole and Bruno Mars.
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 live blog.
Check out Bruno Mars talking to Capital FM ahead of his Jingle Bell Ball performance tonight below:
Get a load of the stars arriving for the epic Jingle Bell Ball 2012 on Saturday 8th and Sunday 9th December.
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The young singer also reveals all about how he met the 'Doo Wops & Hooligans' singer.
The 'Locked Out Of Heaven' singer will perform new shows in London, Nottingham and Newcastle.
Do you Hooligans think you know all there is to know about Bruno Mars? Think again. Join Capital FM as we take a look at 10 thing you didn't know about Bruno Mars.
Watch the retro themed promo for the singer's latest track right now on Capital.