Before Kris's last name was Jenner, it was Kardashian. The matriarch of the famous reality TV family was married to lawyer Robert Kardashian for 12 years and had four children before cheating on her husband, which ultimately ended in divorce. She admitted, "He was the only guy that I had dated. When you're very young you do a lot of stupid things. And it's probably the biggest regret of my life that I ended up having an affair."