Kate Middleton ($10 million)
In a way, the Duchess’ story is “rags to riches”. She was not a royal until she married Prince William in 2011. Her family was very wealthy, despite her being a commoner. Their net worth was $50 million, which they had earned through Party Pieces, an online party supplies business.

Middleton has a reputation for being able to save money. She doesn’t spend money from her family. Prince Charles pays for her dresses and the countries that she visits cover all of her travel costs. Her net worth appears to be more than $10,000,000 as she is in charge of UK clothing sales and tourism.