Peter Brant II, $1 billion
Brant is one of America's most fashionable socialites and heirs. He lives in Greenwich, NYC, and is a model and fashion designer. His father was business mogul Peter Brant, and he and his brother were labeled "Princes of New York" by The New York Times.
Lynsi Snyder, $3 billion
Lynsi is an heir to the In-N-Out Burger fortune, thanks to her grandfather, who founded the chain in 1948. She was America's youngest female billionaire until Kylie Jenner knocked her out of first place with her makeup line. She is now the majority owner of In-N-Out, which she was granted when she turned 35.