Here’s a look at some of the world’s most valuable celebrities and how they built their fortunes. David Geffen: Hollywood’s Quiet BillionaireEstimated Net Worth: Around $9 billionDavid Geffen rarely appears in headlines compared to movie stars, yet he sits at the top of the celebrity wealth rankings. Credits: ParadeGeorge Lucas: Turning a Galaxy Into BillionsEstimated Net Worth: Around $5.1 billionGeorge Lucas changed filmmaking forever with Star Wars. Credits: FortuneJay-Z: Hip-Hop’s Greatest EntrepreneurEstimated Net Worth: Around $2.5 billionJay-Z’s journey from rapper to billionaire businessman is one of the most remarkable stories in entertainment. Although their careers span music, sports, television, and filmmaking, the world’s richest celebrities share several common traits.