Donald Trump Jr.

Donald Trump Jr. and his wife are expecting their third child.

"Ok guys BIG NEWS (at least for me) my awesome wife Vanessa has another bun in the oven," Trump Jr. tweeted. "Baby #3 on the way. Wish us luck!!!"

Ivanka Trump expecting first child

Trump Jr., 33, and Vanessa are parents to Donnie John III, 2, and Kai Madison, 3. The couple wed in 2005.

His sister and fellow Celebrity Apprentice adviser Ivanka Trump, who is pregnant with her first child, also tweeted: "Auntie Ivanka is so excited."