I'm not sure how the calculations are made, but apparently Janet Jackson is now a billionaire and it has nothing to do with her billionaire husband. According to Variety, Janet has earned a billion dollars in her career, which is something Michael was unable to do. But is she a billionaire? That is the question. Just because she has made a billion dollars does not mean she has kept it. It does not really make sense to me because it conflicts with what she was doing with her mother and her nephews and niece when she was in on the whole trying to get them to sign things. The vast majority of the money Janet earned was along time ago. They have her earning over $300M from movie roles. Really? I don't think so. She was not a huge star in any movie she made to the extent where she made that kind of money. They also say she earned $458M from concert tours. Again, it seems really high. The remaining $300M was from album sales and endorsements. I don't think Janet has anywhere close to that kind of money and don't think she made half of what they say she made. I just don't. I also don't think she has more than $100M at the very most. That would be stretching it.