Lisa Rinna revealed with a heartbreaking social media post that her mother, Lois Rinna, had passed away in the wee hours of Monday morning.MORE: Lisa Rinna stuns fans with gorgeous new picture – and her daughter has the best reactionLois suffered a stroke last week that rendered her bed-ridden, as Lisa had shared, and she ultimately succumbed.The reality television icon shared a rare picture of her mother emerging out of the car after her wedding and wrote in the caption: "Lois DeAndrade Rinna