Vanessa Trump, Don Jr.'s ex-wife, shared her breast cancer diagnosis on Instagram, ahead of her ex-husband Don Jr.'s upcoming wedding.

Trump, 48, is the ex-wife of Trump's eldest son, Donald Trump Jr. They have five children together.

Vanessa Trump, the former wife of Donald Trump Jr shared that she'd been diagnosed with breast cancer, prompting former sister-in-law Ivanka Trump to react.