Vanessa Haydon Trump, Donald Trump Jr.

Donald Trump Jr. is expecting his fifth child with wife Vanessa.

"Well @MrsVanessaTrump Kai, D3, T-man Spencer & I have some exciting news... We are expecting baby #5 this summer. Cant wait#evenlesssleep," he announced on Twitter.

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The couple, who have been married eight years, are already parents to Kai Madison, 6, Donald John III, 4, Tristan Milos, 2, and Spencer Frederick, 15 months.