Vanessa Trump and Donald Trump Jr. Expecting Baby No. 5

Vanessa Trump and her husband Donald Trump Jr. announced Tuesday via Twitter that they're expecting their fifth child.

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

— Donald Trump Jr. (@DonaldJTrumpJr) January 21, 2014

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Later, Trump Jr. told Us Weekly: "We are thrilled to be welcoming baby number 5 this summer! Vanessa and I can't wait to continue the adventure of raising the big family we have always wanted and have been blessed to receive."

Trump Jr., the son of millionaire "The Apprentice" host Donald Trump, is executive vice president of development and acquisitions for the Trump Organization.

The Trumps' oldest child is 6-year-old Kai Madison, and the three others range in age from 4 years to 15 months. Trump Jr. and Vanessa have been married eight years. His two siblings, brother Eric Trump and sister Ivanka Trump, also appear on their father's reality show.

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