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Another Boardroom baby is in the works!

Donald Trump's son Donald Jr. and wife Vanessa are expecting again.

"Ok guys BIG NEWS (at least for me) my awesome wife Vanessa has another bun in the oven. Baby #3 on the way. Wish us luck!" Donald Jr., 33, wrote on his Twitter page Wednesday.

PHOTOS: Baby bump hall of fame

Donald Jr. and Vanessa, who married in 2005, are already parents to Kai Madison, 3, and Donald III, 2.

And Donald Jr.'s little sis, Ivanka, 29 -- who is currently pregnant with her first child with husband Jared Kushner -- helped spread the good news.

"Auntie Ivanka is so excited!" she tweeted back.