It happens to the best of us. When you first start out in a new relationship it is well known fact that you pack on a few pounds from the wooing and dinner nights from your new beau. Scarlett Johansson age 26 is no exception. She is dating actor Sean Penn, 50 and girlfriend was spotted working out that extra luggage around the midsection. Good for her for hitting the pavement the pavement and working on her fitness. I think she still looks great!