I hate to break the hearts of any aspiring actresses who are reading this, but let me tell you how most people become famous movie stars: they have famous parents. That's because it's much easier to get in a movie when you help finance it. The reason I bring this up is because famous actress, Kate Mara, isn't just some nobody who got into acting. She's the daughter of one of the NFL's biggest hall of famers, Art Rooney Sr.
Art Rooney Sr. founded the Pittsburgh Steelers, which is insane. How many people can say that they created a football team? Along with being involved with football, Art Rooney Sr. was an accomplished boxer. All of this isn't to say that Kate Mara doesn't deserve any success though. She's a fantastic actress who deserves any success she's had.