By Selena Hill ( | First Posted: Apr 11, 2013 04:02 PM EDT

TV personality Ivanka Trump arrives for the Carolina Herrera Spring/Summer 2013 collection show at New York Fashion Week September 10, 2012. (Photo : REUTERS/Carlo Allegri)

Ivanka Trump is expecting baby number two with her husband Jared Kushner, the owner of the New York Observer.

The couple had their first child, a girl named Arabella Rose, in July 2011.

"Jared and I are so excited that Arabella will become a big sister this fall. Thanks for all your good wishes!," tweeted Trump, the daughter of real estate mogul and TV personality Donald Trump.

The 31-year-old mother says she manages her time between her family and her career, though she doesn't take kindly to the term "working mom."

"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," she recently told Redbook. "Every morning I'm so sad to leave Arabella. 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."

In a recent interview with US Weekly last month, Trump, a top executive at The Trump Organization, explained that the key to life is balance.

"I want to make sure I'm with my daughter when she needs me to be with her, but I also know that it's okay to go to the office when I'm working on a big deal then I'll make [family time]up on the weekend." She added, "I try to think of parenthood as a marathon, not a sprint. I know that I have to do well at this by taking it one day at a time and not beating myself up too much over small things."

Trump described her attention-seeking father as a great grandfather who could be happy to welcome another grandchild, as long as he has assistance when babysitting.  

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

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