Chelsea Clinton Pregnant Again She and Marc Mezvinsky are expecting another baby By Evann Gastaldo, Newser Staff Posted Dec 21, 2015 3:10 PM CST 34 comments Comments This photo provided by a Clinton spokesman, shows Chelsea Clinton, her husband Marc Mezvinsky, and their daughter Charlotte Clinton Mezvinsky on Sept. 27, 2014, at Lenox Hill Hospital in New York. (AP Photo/Office of President Clinton, Jon Davidson) (Newser) – Hillary Clinton's potential election to the presidency isn't the only thing the Clinton family has to look forward to next year: "Next summer, Charlotte is going to be a big sister!" Chelsea Clinton tweeted Monday, along with a picture of her daughter reading a copy of Big Sisters Are the Best. "Feeling very blessed & grateful this holiday season." Charlotte, Chelsea's daughter with husband Marc Mezvinsky, turned one year old in September.