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Jason Derulo and Labrinth have been confirmed for this year's Capital FM Jingle Bell Ball in London.
Both acts will perform on the opening day of the event, which takes place at the O2 Arena on the 3rd and 4th December.
Jason and Labrinth have both enjoyed a hugely successful year, with the latter earning a chart hit with his Tinie Tempah-featuring single 'Earthquake'.
They will join the previously announced performers The Wanted, Calvin Harris, Olly Murs and Pixie Lott on the line-up.
The final name on the bill for day one of this year's Jingle Bell Ball will be announced during Capital Breakfast on Monday morning (31st October) at 8am.
Tickets for the 2011 Jingle Bell Ball with Windows 7 go on general sale at the same time.
But Capital FM VIPs will be given exclusive access to a ticket pre-sale, which opens on Sunday (30th October) at 10am.
Register to become a Capital VIP now to find out how you can see the biggest artists of 2011 all on one stage this December.