While there are precious few people who work as hard as Rihanna, there are even fewer who party quite as hard. The Barbados-born pop star spent much of July aboard a chartered yacht in the Italian and French Rivieras, riding jet skis and hosting parties to the tune of approximately $300,000 a week. She also made headlines for supposed rendezvous with her infamous ex, Chris Brown, who happened to be in St. Tropez at the same time (how convenient).
