Chelsea Clinton, the only child of former President Bill Clinton and former Secretary of State Hillary Clinton, has given birth to a baby girl.

Marc Mezvinsky and Chelsea Clinton_s Wedding photosThirty-four year old Clinton, who is married to investment banker Marc Mezvinsky, broke the happy news to her more than 600,000 followers on Twitter last night.

“Marc and I are full of love, awe and gratitude as we celebrate the birth of our daughter, Charlotte Clinton Mezvinsky” Clinton tweeted.

Charlotte’s arrival comes four days earlier than expected. Clinton, who resigned from her position as a specialist reporter for NBC earlier this week, continued to work full-time for the Clinton Foundation.  She last appeared in public on Wednesday at the annual Clinton Global Initiative summit at NY’s Sheraton’s Hotel.

As of press time the happy grandparents had not released a statement on the birth of their granddaughter.