Photo: Chelsea Clinton announces she's pregnant with her 3rd child!

The Clinton crew is gaining another member. Chelsea Clinton announced Tuesday she and husband Marc Mezvinsky are expecting their third child.

The former First Daughter revealed the happy news on Twitter, and said her older daughter and son were excited to welcome the newest addition. The Clinton Foundation Vice Chair married investment banker Mezvinsky in 2010, and they welcomed daughter Charlotte in September 2014. Son Aidan was born in June 2016.