It’s going to be one crowded board room as the Trumps continue to expand the family.

Ivanka Trump and her husband New York Observer owner Jared Kushner are expecting their second child, Celebuzz has confirmed.

Donald Trump’s daughter took to Twitter to share the happy news with the world.

Jared and I and are so excited that Arabella will become a big sister this fall. Thanks for all your good wishes!xo Ivanka

— Ivanka Trump (@IvankaTrump) April 11, 2013

The new baby boy or girl will be joined by big sis, 20-month-old Arabella Rose.

The real estate heiress and Apprentice star has previously gushed about how motherhood suits her well.

“It’s just pure exhaustion. But it’s been so much fun,” she told Wendy Williams. “Now it’s really fun. I mean, I’m chasing her around the house, I don’t get a minute of down time. It’s the best. It’s the greatest… She’s started to identify words and surprised me.”

Dad Donald also has four more grandchildren from his son Donald Jr., who welcomed son Spencer in October 2012.

“It’s always exciting,” Donald previously told Celebuzz about all the pitter patter of little feet.

Donald Trump Jr. really loves being a dad.

In October, the 34-year-old and his wife Vanessa Haydon welcomed their fourth child, a son named Spencer.

“The New Year’s resolution is to stop having more babies,” Trump Jr. told Celebuzz last Friday.

“It’s a problem I have but I was very disappointed with Vanessa, it’s been about five weeks and she’s not pregnant yet,” he joked.

Like dozens of other parents last week, the couple treated their 5-year-old daughter Kai to the annual Z100 Jingle Ball festivities, presented by Aéropostale, at Madison Square Garden.

Trump Jr., who is also a dad to his namesake Donald Trump III, 3, and 1-year-old Tristan, said the last six years have been “pretty much non-stop.”

“It’s been great and we’re just having a lot of fun with them,” he added.

As the executive vice president at his father’s business, The Trump Organization, Donald Trump’s eldest said he’s OK with not having any sleep these days.

“There will be plenty of time for that in some other decade. Between work and everything and [the children], it’s just a lot of fun . . . I can really do a lot more with them now.”

For more of our chat with Donald Trump Jr., check out the video above.

Donald Trump Jr. is a father four times over!

Trump and model wife Vanessa have welcomed a son, he announced on Twitter Sunday. “It’s a BOY!!!” Trump tweeted, adding that mom and baby are “doing great.”

The new bundle of joy joins Trump’s brood of three — Tristan Milos, 1, Donnie John III, 3½, and Kai Madison, 5.

The proud parents — who wed in November 2005 — announced the pregnancy on Twitter back in May. “Well, Vanessa & I have some good news,” Donald Trump‘s businessman son wrote. “We are expecting baby num 4 in the fall!!! Kai, Donnie, & Tristan can’t wait!”

And Trump is evidently thrilled about his growing family. After Holly Robinson Peete tweeted congratulations to the couple for joining the “#4kidsclub,” Trump responded, “Yea it should be a zoo but very fun!!!”

But the couple makes “a lot of time for each other,” Vanessa Trump told Celebuzz in September. “We keep our kids on a great routine and schedule, which really helps with balance. Don and I are very hands-on parents, which I believe is very important.”

Few details about the new addition have been released as of yet. While the baby boy’s name remains under wraps, Trump has joked about his bambino making his first appearance in Apprentice boardroom. “2 maybe 3 weeks;),” Trump tweeted in jest.

Trump has been shooting the first-ever season of All-Star Celebrity Apprentice, which see past contestants like Bret Michaels, Lil’ John, LaToya Jackson, Garey Busey, Dee Snider and others return to the competition. The cast was announced on Oct. 12; the NBC reality competition will air next March.

Donald Trump Jr., the son of real estate mogul Donald Trump, is once again defending a hunting trip he took to Africa in 2011, in which he and his brother Eric shot and killed a number of animals, much to the decry of animal rights organizations like PETA.

Speaking to Dan Schmidt and Brad Rucks of Deer & Deer Hunting last Wednesday, Trump Jr. attempted to clarify the trip once and for all, claiming it was “all legit.”

“I think what made it sort of a bigger story and kind of national and even global news was that I didn’t do what a lot of other people do, which is immediately start apologizing for what I am and that I’m a hunter and all this,” he said. “I kinda said, ‘No, I am what I am. I did all those things. I have no regrets about it.’”

“That really stirred the hornet’s nest,” he continued, “Because they’re used to these other guys, perhaps with slightly weaker personalities, just kowtowing to their calls and everything like that … If I’m in the right, I make sure I let people know it … I guess within the hunting community, a lot of people gave me some credit for that. It gave me more flack from the other guys but if they’re not gonna understand or they don’t choose to, I could care less.”

“There’s enough people in the world,” he concluded. “I have enough friends. I don’t need to make any more.”

The Trump brothers first came under fire for their trip in March, when TMZ obtained photos of Donald and Eric showing off the animals they had killed. In one photo, Donald is seen holding the tail of a dead elephant.

Shortly after the pictures were released, Donald received a number of scathing reactions from various people and organizations, including PETA.

Donald later defended himself on Twitter, claiming, “Not a pr move I didn’t give the pics but I have no shame about them either. I HUNT & EAT game.”

He added that the animal carcases “fed a village for weeks” and that nothing was wasted.

In March, Donald and Eric became the subject of an investigation by conservationists in Zimbabwe over their hunt.