Chelsea Clinton announces on Twitter that she is expecting 2nd child

Chelsea Clinton, the daughter of former President Bill Clinton and former secretary of state Hillary Clinton, announced on Twitter on Monday that she is expecting her second child with husband, Marc Mezvinsky. She posted a picture of her first daughter Charlotte writing that her daughter is going to be a big sister. "Next summer, Charlotte is going to be a big sister! Feeling very blessed and grateful this holiday season" Big congrats to her and her husband.