Chelsea Clinton is pregnant with her second child, she announced Monday afternoon on Twitter.
"Next summer, Charlotte is going to be a big sister! Feeling very blessed & grateful this holiday season," Clinton tweeted with a photo of her daughter Charlotte.
The baby will be Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonTrump defends indicted GOP congressman GOP lawmaker says he expects to be indicted over FBI investigation Why it's time for conservatives to accept the 2020 election results and move on MORE's second grandchild.
Charlotte was born in September 2014 to Chelsea and husband, Marc Mezvinkski. She is the couple's first child.
"Your dad and I could not be happier for you, Marc, and Charlotte," Hillary tweeted shortly after the announcement. "We're so excited to meet our second grandchild! -H"
"Christmas comes early," former President Bill Clinton added on Twitter.
Next summer, Charlotte is going to be a big sister! Feeling very blessed & grateful this holiday season. pic.twitter.com/gpCGqcmeCq— Chelsea Clinton (@ChelseaClinton) December 21, 2015
Your dad and I could not be happier for you, Marc, and Charlotte. We’re so excited to meet our second grandchild! -H https://t.co/hgTr07HBlr— Hillary Clinton (@HillaryClinton) December 21, 2015
This story was updated at 4:07 p.m.