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The Capital Late Show with Marvin Humes 10pm - 1am
9 May 2012, 14:12 | Updated: 9 May 2012, 14:16
The Bajan star will join the likes of Jason Derulo and Jennifer Lopez on stage for the last episode of the music reality show.
Rihanna has been confirmed to perform her new single 'Where Have You Been' on the American Idol final.
The 'We Found Love' star will take to the stage on Wednesday 23rd May for the performance as part of the two-day show finale.
Jason Derulo has already been confirmed to make his live return to the stage following his horrific neck injury which caused him to cancel his planned worldwide tour.
Judge on the series Jennifer Lopez will also be performing on the night as she gives an outing to her latest release 'Dance Again'.
Series seven champion David Cook is also expected to take to the stage at the Nokia Theatre in Los Angeles to perform 'The Last Song I'll Write For You'.
Meanwhile, the 'Talk That Talk' star has also confirmed plans to launch her own fashion line which she has told fans will be a very "personal" collection.