Isle of Wight Council bosses have overturned a vote by councillors - who had rejected the partnership to secure £900 million of funding.
Final Acts Added To Isle of Wight Festival
X Factor winners Little Mix have been added to the line-up of the Isle of Wight Festival 2013.
The band said: ''We are so excited to be doing the Isle of Wight Festival this year. We've always wanted to go and now we get to go and perform, amazing.''
Other acts who've been confirmed are hip hop duo Rizzle Kicks, 80s group T'Pau, Everything Everything, Bastille, Delilah, Damian Lazarus, and Tim Burgess.
Burgess, the frontman of The Charlatans, will be performing in the Cabaret Club at the festival on the Saturday and Sunday nights.
He said: ''There'll be DJ sets, live performances and all sorts of grooviness and goodness going on.''
John Giddings, the festival's promoter, said: ''Now that the line-up is complete, I am really excited for this year's festival.
We have something for everyone.''
Other acts already announced include headliners The Stone Roses, The Killers and Bon Jovi as well as Paul Weller, Emeli Sande, Ke ha, Ben Howard, Jake Bugg, The Script, Bloc Party, Paloma Faith, The Maccabees, Ellie Goulding, FUN, Blondie and Devlin.
The event takes place at Seaclose Park, Newport, between June 13 and 16.
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