The 'Havana' hitmaker will join the 'Anywhere' singer at the music festival, which takes place from June 21 to 24.
The 'All I Want' hitmakers said: ''We're so excited to be playing such an awesome festival! This will be our third time performing at Isle of Wight festival and we can't wait. Some of our favourite artists ever have played on those stages so we're honoured to join them! Looking forward to playing some new music for everyone!''
Whilst Feeder added: ''We headlined the big top in 2016 after almost a four year hiatus and the atmosphere was electric. It's great to be invited back, especially with it being the 50th Anniversary year. IOW has always been one of our favourite UK festivals to play and this year's line-up is a cracker. See you there!''
British group Soul II Soul, who are also performing, said : ''We're thrilled to be playing the Isle of Wight festival 2018! It's a real honor to play one of the biggest festivals of the summer.''
The Isle of Wight Festival takes place from June 21 to 24 at Seaclose Park, Newport and will be extra special as it is marking its 50th anniversary.
Haçienda Classiçal, Jessie J, Circa Waves, Sheryl Crow, Tom Grennan, Walking on Cars, The Skids, Louise, Ten Tonnes, Tokio Myers, The Professionals, Get Cape.Wear Cape.Fly, Rothwell, Judas and Catherine McGrath will perform.
These 23 new artists will join previously announced headliners - Depeche Mode, The Killers, Kasabian and Liam Gallagher - as well as The Script, Van Morrison, James Bay and Blossoms.
Day tickets start at £65 are available to purchase now.
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