Oh, no. Kelly Clarkson has postponed a month of concert dates as she deals with a difficult family matter. On Wednesday, the singer shared that the remaining August dates of her Las Vegas residency have been postponed because her ex-husband and the father of her two children, Brandon Blackstock, is suffering from an undisclosed illness. She expressed on Instagram: "Unfortunately, I need to postpone the remainder of the August Studio Session dates in Las Vegas.