The former First Daughter, 34, announced the news during an event on Thursday, according to People. "Marc [Mezvinsky] and I are very excited that we have our first child arriving later this year," she said. "I certainly feel all the better whether it's a girl or a boy that she or he will grow up in world filled with so many strong female leaders."
"Marc and I are so thrilled to be expecting our first child in the fall!" she also wrote on Twitter. "Thank you for all the kind words!"
Clinton and husband Mezvinsky wed in 2010.