Chesnot/Getty Images Centibillionaire Bernard Arnault is a collector of modern and contemporary art.
- Philanthropy is the most popular pastime among billionaires, Business Insider previously reported, but many of the world's wealthiest people also make time to maintain their personal collections.
- Jeff Bezos has funded teams that have collected rockets off of the ocean floor, according to his blog, while Michael Dell spent a reported $100 million on a collection of vintage photographs.
- Kylie Jenner has a collection of luxury handbags worth at least $440,335, according to Elle UK.
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Philanthropy is the most popular pastime among billionaires, Business Insider previously reported, but many of them also make time to maintain their personal collections.
Some of the world's richest people prefer classic collectors' items like diamond-encrusted Rolex watches and souped-up sports cars; Amazon founder Jeff Bezos has funded teams that have collected rockets off of the ocean floor; and Dell Technologies founder Michael Dell prefers vintage photographs, Business Insider previously reported.
Read more: The 10 most common hobbies among the richest people in world, from aviation to real estate
Keep reading to learn about the personal collections of seven billionaires.