Chelsea Clinton is pregnant with baby #2

Katie and Suri's A-List Meet and Greet
Katie and Suri's A-List Meet and Greet

The Clinton campaign bus is about to get fuller!

Chelsea Clinton announced Monday in a super sweet Twitter post that she and her husband Marc Mezvinsky are expecting their second child together.

"Next summer, Charlotte is going to be a big sister! Feeling very blessed & grateful this holiday season," the 35-year-old politico wrote alongside a photo of her 1-year-old daughter, Charlotte.

The happy parents just celebrated Charlotte's first birthday in September and have been busy working on the 2016 campaign for her mom, Hillary Clinton. Naturally, both her parents President Bill Clinton and mom Hillary also took to Twitter to share their excitement about becoming grandparents again.

Talk about a perfect Christmas present!

PHOTOS: Take a look back at Chelsea Clinton's life in the spotlight

Originally published