Catherine Middleton's life is nothing short of a modern-day fairy tale. But despite being referred to as a "commoner" before her marriage to Prince William in 2011, Kate's story is far from rags to riches, and she actually comes from a relatively wealthy background. 

As a result of her marriage, she's ascended the royal ranks, and the once Duchess of Cambridge is now the Princess of Wales and future Queen of the United Kingdom.

Read on to explore Kate Middleton's humble (well, kind of) roots and get a glimpse inside her opulent royal lifestyle, including how she spends some of her fantastic fortune. All dollar amounts in US dollars.