Kelly Clarkson's ex-husband, Brandon Blackstock, has died following a cancer diagnosis. Here's why grieving an ex can be so complicated.

The shocking news comes as Clarkson postponed her Vegas residency.

Brandon Blackstock, a talent manager and the ex-husband of Kelly Clarkson, has died at age 48 after a private battle with cancer, his family announced.

Brandon Blackstock, Kelly Clarkson's former husband of seven years and father to kids River Rose and Remy Alexander, died \

The announcement of Mr. Blackstock’s death came one day after Ms. Clarkson said she would be postponing the remainder of her residency in Las Vegas.

Kelly Clarkson's ex-husband, Brandon Blackstock, has died following a cancer diagnosis. Here's why grieving an ex can be so complicated.