Kelly Clarkson and her kids received an outpouring of love from her fans on social media after PEOPLE confirmed her ex Brandon Blackstock's death on Aug. 7. The talent manager was 48 and died after living with cancer for three years.

Kelly Clarkson's ex husband and father of her two children, Brandon Blackstock, has died, and the family's loss makes their last Instagram posts even sadder.

Clarkson had announced late Wednesday night that she was postponing the August dates of her Vegas residency because Blackstock "had been ill."