Chelsea Clinton and her husband Marc Mezvinsky have announced the birth of their newborn son, Jasper Clinton Mezvinsky!

The 39-year-old former First Daughter tweeted, “This morning we welcomed our son, Jasper Clinton Mezvinsky. We are overflowing with love and gratitude and can’t wait to introduce him to his big sister and brother.”

Chelsea‘s mom, Hillary Clinton, also posted the news on Twitter, writing, “Sharing some happy news this morning! Bill [Clinton] and I are so thrilled.”

Chelsea Clinton and Marc Mezvinsky are also parents to Aidan, 3, and sister Charlotte, 4.

Congratulations on the wonderful news!