Kardashian writes , ” Happy 80th Birthday to my grandma MJ!!!! You have taught me so much about life! You are my idol!!! I can’t wait to celebrate with you!” It’s rather startling how much Kim’s mom Kris Jenner looks like her own mother. Older sister Kourtney Kardashian really favors them as well. “Keeping Up With the Kardashians” airs Sunday nights at 9 p.m. ET/PT on E!