As for Rihanna, if she really sold 150 million records worldwide (which I highly doubt), that's an incredible feat for her to achieve in only 7 years. However, it's only obvious that figure is probably like this: 85% singles sales, 15% everything else. Seriously she probably hasn't even sold quarter of the amount of albums that Mariah, Whitney, and Madonna has sold. Just like Bey, she doesn't have great album sales.