Just when you thought Dr. Dre was an actual billionaire, Forbes releases Hip-Hop's Wealthiest Hip-Hop Artists of 2015 list.

Even though Dr. Dre ranked in the top-5, he still wasn't No.1. That honor goes to Diddy, who is worth an estimated $735 million. I always wondered where they got these numbers from because how do you know how much money someone has actually made? I'm sure all these artists have investments that they don't report to Forbes.

Nevertheless, here is the Forbes 2015 top-5 hip-hop earners.

Interesting how Ciroc keeps Diddy at the top of the list:

Diddy has a deal with Diageo ’s Ciroc vodka that guarantees him a split of the proceeds if the brand is ever sold, an event that would surely land him a nine-figure check. He also owns a controlling stake, or close to it, in clothing lines Sean John and Enyce, alkaline water brand Aquahydrate, new tequila DeLeon and multimedia network Revolt. Diddy founded the latter as a sort of next generation MTV with a renewed focus on music.