Eric and Lara Trump expecting their second child: How many grandchildren will Donald Trump have now?

Eric and Lara Trump are expecting their second child together.

The couple took to Twitter on Wednesday morning to share the exciting news with the world, revealing that Lara is due to give birth in August. They're already parents to Eric "Luke" Trump, 18 months.

"Lara and I are excited to announce that we will be adding another member to our family in August!" Eric tweeted along with some family photos. "Luke will be a great big brother!"

"Baby number two coming this August!!" Lara, who is about five months pregnant, said in her own tweet. "All of the boys are excited to become big brothers!!"

Her post also accompanied family photos that included their two dogs.

Lara's reveal means that, when she competed in the Los Olas Triathlon in Fort Lauderdale last month, she was already four months pregnant. When she was pregnant with her son back in August 2017, she was seen sweating it out at the gym just a month before giving birth.

Eric, who is the second son of President Donald Trump, married Lara in 2014. He's the vice president of the Trump Organization, while former "Inside Edition" producer, Lara, spends her time getting involved in a variety of animal-focused charities.

The couple's second child will be the president's tenth grandchild overall.

See photos of Lara Trump through the years: