Music
Rex Features
The singer will perform the hits 'Super Trouper' and 'When All Is Said And Done' at the concert at London's Hyde Park on September 13, the latter accompanied by Benny Andersson.
Minogue said: "This opportunity to perform classic Abba songs on stage with members of Abba really is a dream come true.
"Their music has played such a great part in my life from a very early age and I'm thrilled I'll be able to share that with them personally."
Other new names added to the bill are Jamie Cullum and Christian Jon Billet, who join previously-announced acts including Lulu, Jason Donovan, the cast of Mamma Mia! and Helen Sjoholm.
The event will be broadcast live on Radio 2 at 6.30pm.
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