2. Ariana Rockefeller

Net Worth: $2.8 billion*
Wealth Inherited From: Standard Oil

Ariana Rockefeller is a rich heiress to Standard Oil and a member of the historic, highly prominent Rockefeller dynasty. The Rockefellers date back to the early nineteenth century when their patriarch founded Standard Oil and made billions. The family has remained wealthy, but they have also managed to be very charitable. 

Standard Oil was bought by BP, meaning another big payday for the wealthy family. Rockefeller is very interested in fashion, and she studied at Columbia University. She had an internship at the United Nations, but she decided to start her own fashion brand. Her label is very successful, and she just added a handbag line.

Rockefeller is a major supporter of the Humane Society, and she chaired the NYBG Winter Ball. She lives in the Upper East Side of Manhattan with her husband, an entrepreneur named Matthew Bucklin.