This Christmas became his last Christmas. On Dec 25, British pop icon George Michael passed away peacefully, his family told the BBC. According to Billboard, Michael’s death was caused by heart failure. The timing of his death was a heartrending *coincidence as one of Michael’s most popular hits was Last Christmas. The singer first saw fame during the 1980s with pop duo Wham! before going on to have a successful solo stint. During his career, he won two Grammys and three Brit Awards.