Idolator reports: P.W. Botha will get the gas face when Eminem headlines a concert at London's Hyde Park celebrating the 90th birthday of former South African president Nelson Mandela.

Shady's planned warm-up acts include Stevie Wonder, Queen and a bunch of white British songbirds ranging from Annie Lennox to Keane, with more superstars invited but not yet confirmed. It will be Eminem's first public performance since 2005. - more on this story

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