Mary Jo “MJ” Shannon, the mother of Kardashian “momager” Kris Jenner, has died, Jenner announced on July 16. She was 91 years old.Jenner shared a heartfelt post about her mother, describing her as the “heart of our family.”“Today, we said goodbye to my beautiful Mommy MJ,” Jenner said of Shannon in her social media post. “There are no words that could ever capture what she has meant to me or the heartbreak of having to say goodbye.”In her social media post, Jenner reflected on the ways in which Shannon, known to fans of “The Kardashians” as “MJ,” had impacted her throughout the course her life. Shannon was the grandmother to the family’s famous stars including Kim Kardashian, Kourtney Kardashian, Kendall Jenner and Kylie Jenner.“She taught me everything that truly matters… to love your family fiercely, to be kind, to show up for the people you love, and to never take a single moment together for granted,” Jenner wrote. “She taught us that family is everything. She showed us how to love unconditionally and how to find joy in the little moments. She showed me how to face life’s challenges with resilience and faith.”Jenner, who said she was grateful for “every sacrifice” her mother made, also shared the aspects of Shannon that she will grieve.“I will miss our daily talks, your smile, your laughter… Our hearts are broken, but we find comfort knowing that love like yours never truly leaves us,” Jenner wrote. “Your love will live on in our family, in our traditions, in every moment we are together, and in every life you touched.”While Jenner said that the loss will be difficult for her and the family, she added that Shannon’s memory will live on.“When I look at my kids and my grandkids, I will forever see pieces of you in all of us. There is not a part of me that isn’t shaped by you. And if I have done anything right in this world, it’s because I spent my life trying to live in a way that would make you proud,” Jenner wrote. “Every memory, every moment, every blessing, it was all because of you, and I will forever thank God every single day for making you my mommy.”Jenner concluded her post by thanking Shannon for “giving us everything.”“My heart is broken into a million pieces… thank you for giving me the greatest childhood and oh what a beautiful blessed life…” Jenner wrote. “I love you forever Mommy.”