Kris Jenner has always been the rock of the Kardashian-Jenner empire, but even she isn't immune to heartbreak. In the latest episode of "The Kardashians," the momager got real about the loss of her younger sister, Karen Houghton, who passed away from a heart attack earlier this year.

Kris Jenner was left devastated last year when her younger sister Karen Houghton died after suffering a cardiac arrest and sudden cardiac arrhythmia.