Eric Trump and Lara Trump are expecting their first baby!

President Donald Trump's 33-year-old son and his wife, also 33, confirmed the exciting news that they are pregnant with Baby No. 1 — a boy! — to People on Monday, March 20.

"We found out on my birthday, which was pretty cool," Eric told the entertainment news outlet of Lara's pregnancy.

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"I was exhausted in the beginning," Lara said. "It surprised me, because I’m a very active person, and until the fatigue hit, I didn’t believe it would actually happen to me. It really affected me. But I’m feeling really good now."

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Lara and Eric in March 2017.

Eric and Lara previously became engaged in July 2013 and tied the knot on Nov. 8, 2014, at Mar-a-Lago Club in Palm Beach, FL.

"I knew I always wanted kids someday," Lara — a former associate producer at the syndicated television news program Inside Edition — said of starting a family with her husband.

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"Eric's going to be an amazing dad," she continued. "[His] nieces and nephews love hanging with him. He's the cool uncle. He's watched Frozen many times."

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Eric and Lara (far left) with the extended Trump family.

Eric's two older siblings, brother Donald Trump Jr. and sister Ivanka Trump, have eight children between them. Don, 39, and his wife, Vanessa Haydon, have five kids: daughters Kai Madison Trump, 9, and Chloe Sophia Trump, 2, and sons Donald Trump III, 8, Tristan Milos Trump, 5, and Spencer Frederick Trump, 4.

Ivanka, 35, and her husband, Jared Kushner, have three children: daughter Arabella Rose Kushner, 5, and sons Joseph Frederick Kushner, 3, and Theodore James Kushner, 11 months.

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Eric and Lara's unborn son will be President Tump's ninth grandchild. "Eric's dad was so excited," Lara revealed to People. "We were worried he'd blurt it out at a press conference!"

Click through the gallery below for a guide to all of Donald Trump’s children!