Her birthdate is actually June 1, 1961.
Jennifer's birthdate is actually June 1, 1961 and she was born at 1:09pm. Her birth certificate is viewable to the public at the Massachusetts Vital Records and Statistics office research room in Dorcester, MA. I don't know why imdb and wikipedia give August 28. It's somewhat odd to lie about what day you were born. I understand lying about the year, but the entire birthdate... weird.
share