NEW YORK (CBSNewYork)Chelsea Clinton announced Tuesday that she’s expecting her third child.

Clinton made the announcement on Twitter, saying she and husband Marc Mezvinsky “cannot wait to meet our newest addition later this summer.”

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Clinton and Mezvinsky have two previous children, Aidan and Charlotte.

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“Marc and I have loved watching Charlotte be such a wonderful sister and we’re excited to watch Aidan become a big brother!”, Clinton tweeted.