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LONDON, UNITED KINGDOM - DECEMBER 01: Princess Diana Talking To Pop Singers George Michael, Kd Lang And Mick Hucknall At The World Aids Day Annual 'concert Of Hope' At Wembley Arena To Raise Funds For The Charity Crusaid On 1st December 1993 (Photo by TIM GRAHAM/Getty Images)

LONDON, UNITED KINGDOM - DECEMBER 01:  Princess Diana Talking To Pop Singers George Michael, Kd Lang And Mick Hucknall At The World Aids Day Annual 'concert Of Hope' At Wembley Arena To Raise Funds For The Charity Crusaid On 1st December 1993  (Photo by TIM GRAHAM/Getty Images)