Kelly Clarkson postpones Las Vegas residency dates because of ex-husband Brandon Blackstock’s illness  CTV NewsKelly Clarkson Reveals Ex Brandon Blackstock Is ‘Ill,’ Postpones Residency for Kids  People.comKelly Clarkson cancels Las Vegas residency dates, reveals ex-husband ‘has been ill’  Entertainment WeeklyKelly Clarkson postpones remaining Las Vegas shows for family crisis involving ex-husband Brandon Blackstock  Fox NewsKelly Clarkson Taking Break From Las Vegas Residency Amid Family Emergency  Deadline