Chelsea Clinton gave birth on Friday at 7:03 p.m. to a daughter, Charlotte Clinton Mezvinsky.
The baby girl is Chelsea's first child — and the first grandchild of Bill and Hillary Clinton, the former first family. The 34-year-old announced her daughter's arrival in a one-sentence tweet, posted early on Saturday morning at 12:32 a.m.
"Marc and I are full of love, awe and gratitude as we celebrate the birth of our daughter, Charlotte Clinton Mezvinsky," Chelsea's tweet read.
Chelsea, the vice chair of the Clinton Foundation, said during her pregnancy that she and her husband Marc Mezvinsky chose to keep the baby's sex a surprise.
By Saturday afternoon, Chelsea had already added "Mom" to her Twitter bio.
Marc and I are full of love, awe and gratitude as we celebrate the birth of our daughter, Charlotte Clinton Mezvinsky.
Clinton had the child on Friday, a spokesman, Kamyl Bazbaz, told BuzzFeed.
Bazbaz had no additional details to add.
Earlier in the week, the Clintons' daughter spent three straight days on stage at the Sheraton Hotel in Midtown Manhattan, where the annual meeting of the Clinton Global Initiative took place. Chelsea, who in recent years has taken a leading role in her family's foundation, participated in multiple panel discussions, lunches, and dinners, and on her feet from Sunday night to Wednesday afternoon.
Chelsea's family did not announce a due date during her pregnancy. But at the time of the conference earlier this week, according to a source close to the Clinton family, Chelsea was already slightly overdue, and expecting the baby any day.
References to the very pregnant Chelsea were a constant refrain at the conference throughout the week. As the tenth-annual CGI meeting closed on Wednesday, Bill Clinton joked about what he called his daughter's "imminent birth."
Clinton first announced that she was expecting her a child at a Clinton Foundation event in April for "No Ceilings," a women and girl's development project that Hillary Clinton started after leaving the State Department last February.
Sitting beside her mother, Chelsea shocked attendees at the Lower Eastside Girls Club that day when she paused at the end of the event to add — almost as an aside — that she had just "one more thing to say very quickly."
"Marc and I are very excited that we have our first child arriving later this year," Chelsea said. Mezvinsky, a former Goldman Sachs banker, had slipped into the event through a door toward the back of the room before Chelsea spoke.
The audience applauded, and Hillary flashed a wide smile as her daughter made the announcement. The former first daughter added, "I just hope that I will be as good a mom to my child and, hopefully, children as my mom was to me."
Clinton and Mezvinsky were married in Rhinebeck, N.Y., in the summer of 2010.
Update:
Bill and Hillary Clinton released a joint statement on Saturday afternoon about the birth of their granddaughter.
"We are blessed, grateful, and so happy to be the grandparents of a beautiful girl, Charlotte Clinton Mezvinsky, born on Friday evening," the Clinton said.
The new grandparents said they were with Chelsea and her husband.
"We are thrilled to be with our daughter and her husband as they welcome their daughter into the world," the statement said.
"Chelsea is well and glowing. Marc is bursting with pride."
"Charlotte's life is off to a good start."
.@BillClinton and I are over the moon to be grandparents! One of the happiest moments of our life.
Later Saturday afternoon, Bill, Hillary, and Chelsea Clinton each tweeted pictures of Charlotte and the happy family. Bazbaz also sent reporters copies of the photos, which he said were taken by Jon Davidson, a longtime Bill Clinton aide.
"At 7:03 PM on September 26th, we finally met Charlotte," Chelsea said in her tweet.
"We're in love."
At 7:03 PM on September 26th, we finally met Charlotte. We’re in love.
Charlotte, your grandmother @HillaryClinton and I couldn’t be happier!