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.

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

Kelly Clarkson’s top priority is her kids after her ex-husband Brandon Blackstock’s death. The “Since U Been Gone” singer, 43, has “been devastated” for her daughter, River, 11, and son Remington, 9, whom she shared with Blackstock, ever since their father was diagnosed with cancer over three years ago.