2. Megan Fox is 29 years old but she is already a big superstar and she looks fantastic! Megan says that she is blessed with a fast metabolism and therefore, she doesnt have to exercise. But she admits that she know her figure wont last forever so she knows that the gym time is approaching. Well, Megan, maybe you will be as lucky as Pamela Anderson. She is in her late 40s and she still doesnt have to hit the gym. Lucky ladies.