Petra Ecclestone – $3.5 Billion
Petra is the daughter of Bernie Ecclestone, the former CEO of Formula One racing. The 88-year-old businessman is retired but still going strong. One day, Petra will inherit her father’s $3.5 billion fortune and share it with her sister, Tamara, and her mother, Slavica.

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Currently, Petra is ‘only’ worth $500 million and she spends most of her time raising her three children. Similar to other members of her family, she also puts efforts into raising money for charities supporting kids with autism.
Allegra Versace – $900 Million
Thankfully, Gianni Versace had made sure his affairs were all organized before he was assassinated on his doorstep in 1997. Strangely, he left half of his company to his nine-year-old niece, Allegra. Although her mother Donatella managed all the creative duties, Allegra would eventually inherit her fair share on her 18th birthday.

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According to official reports, the 32-year-old heiress plays an essential part in the family company, but it’s unclear precisely what that involves. It’s believed Versace is worth about $900 million due to the kindness of her uncle.