It's a girl for first time parents Chelsea Clinton and Marc Mezvinsky!

The couple welcomed a daughter named Charlotte Clinton Mezvinsky on Friday, Sept. 26, a spokesman for the new parents confirmed.

Chelsea and her husband shared their baby joy on social media following Charlotte's birth.

First-time grandparents Bill Clinton and Hillary Clinton also expressed their excitement for Charlotte's arrival on Twitter.

Chelsea announced she and Marc were expecting at an April 17, 2014, event for the Clinton Foundation in New York City. "Marc and I are very excited that we have our first child arriving later this year," she said.

The former first daughter wed her longtime beau on July 31, 2010, in Rhinebeck, New York in front of 400 people.

Congratulations to the Clinton and Mezvinsky families at this happy time!