Dr. Dre, 50 Cent and Birdman round out the magazine's top-five list.By James Dinh Jay-Z and Diddy Photo: Noel Vasquez/Getty Images Hip-hop is just as lucrative a business as the next, and there's nobody that knows that better than Diddy. As a record executive, fashion designer and vodka seller, the entertainment mogul takes the top spot on Forbes magazine's 2011 list of Wealthiest Hip-Hop Artists, which was released on Thursday (March 10). With a whopping fortune of $475 million, the "Dirty Money" frontman's net worth is attributed to his undertakings in his Sean John clothing line and Bad Boy Worldwide record label.