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Rob Howard & Lauren Layfield 6am - 10am
9 December 2011, 09:22
The event will take place at London's Hyde Park next summer.
Jessie J has been announced as the special guest of Rihanna at next year's Wireless Festival in London.
The 'Price Tag' star has been added to the line-up for the event in London's Hyde Park on 8th July alongside Calvin Harris and Labrinth.
The festival will mark RiRi's only UK performance of 2011.
In a statement, she said: "I'm so excited to be headlining Wireless next year! My UK fans rock and I can't wait to see them at Hyde Park!"
The singer is currently touring Europe on her 'Loud' tour, and has sold over 320,000 tickets for her UK dates, which include ten nights at the O2 Arena in London.
Tickets are on sale now.