Ivanka Trump pregnant with second child

Businesswoman Ivanka Trump and New York Observer Publisher Jared Kushner attend The New York Observer 25th Anniversary Party at Four Seasons Restaurant on March 14, 2013, in New York.
Stephen Lovekin/Getty Images

There's another bump on the way for Ivanka Trump.

Donald Trump's daughter and her husband, Jared Kushner, have revealed that they are expecting their second child to keep sister Arabella Rose, 20 months, company.

Another baby will add to the already busy lives of couple. Kushner owns the New York Observer newspaper, while 31-year-old Trump has a top executive role at The Trump Organization and judges "The Celebrity Apprentice" alongside her father. But it seems as if she's found a good balance.

"Every morning I'm so sad to leave Arabella," she said in the May issue of Redbook. Redbook. But it's important for me to continue what I'm doing. It's fulfilling to me, and I think it makes me a better mom when I'm home."

She added, "I think the expression 'working' versus 'non-working' implies that a mother who stays home doesn't work. It's far more difficult than anything I do in the office."

But that's OK because she's got Grandpa Trump to help with her expanding family -- kind of. She tells Redbook that he's involved with Arabella, but has a hands off approach when it comes down to the nitty-gritty.

"He takes her all the time -- but with me," she said. "He wouldn't know what to do if she was crying or needed a diaper change."