What happens when the daughter of a duke and a princess marries a Colombian billionaire? Well, she becomes the richest young woman in British society! The Times just released its annual rich list of aristocrats under 30, and coming in second, just behind Hugh Grosvenor (a.k.a. the Duke of Westminster) is Lady Charlotte Wellesley, the 29-year-old wife of Alejandro Santo Domingo whose net worth comes in at a whopping $2.4 billion. From her well-to-do lineage to her very memorable wedding, click through for everything you need to know!