Kris Jenner’s mother, Mary Jo “MJ” Campbell, died at 91 of acute cardiopulmonary arrest. Her death certificate revealed she was also battling acute respiratory failure and metastatic lung cancer leading up to her death. “There are no words that could ever capture what she has meant to me or the heartbreak of having to say goodbye,” Jenner wrote. Campbell died 10 days before what would have been her 92nd birthday. Campbell often appeared on Keeping Up With the Kardashians and, later, The Kardashians.