Ekaterina Rybolovleva, daughter of Russian oligarch Dmitry Rybolovlev
Rybolovleva, 22, is the college-aged daughter of Dmitry Rybolovlev, a Russian oligarch who's worth an estimated $9 billion.
Last year, she and her dad made headlines when he bought Sandy Weill's $88 million penthouse on the Upper West Side, supposedly for his daughter to use when she is in New York City.
It's the single-most expensive apartment in the Big Apple, according to the International Business Times.The 6,744 square foot pad has "10 rooms including four bedrooms, a wraparound terrace of more than 2,000 sq. feet, four bedrooms and two wood burning fireplaces."
And this is just a part-time residence. Ekaterina also has homes in Monaco and Switzerland, where she has split her time over the last 15 years.