Although Alaska Governor Sarah Palin hasn't made an official announcement about being a grandmother - her daughter Bristol gave birth to a boy named Tripp - the former vice presidential candidate has said her daughter and fiancé Levi Johnston are working hard with their school studies.

The 18-year-old Bristol gave birth Saturday to a healthy 7 lb, 7 oz. baby boy in Palmer, Alaska. The baby's name is Tripp Easton Mitchell Johnston.