Tuesday was a very big day for one of the Clinton ladies as Chelsea daughter's Charlotte had her first day of school in New York City. Charlotte, who will turn two at the end of the month, was seen heading to her Manhattan school in a stroller being pushed by her nanny while her father Marc Mezvinsky was on his phone. Her mother could not be there for the big day however because she was on the campaign trail for her mother in North Carolina. Grandma Hillary also missed Charlotte's first day of school as she was recovering from pneumonia...