Summarize:

You know the one: the beautiful (silicon-augmented) girl who spends all day shopping or sitting by the pool. You don't want your millionaire to want you only because you fulfill a specific picture, because that makes you very easy to replace. It doesn't set you apart. It's easy to find plenty of girls who fit that image. It's hard to find one that excites him and can match him in the things he enjoys or wants for his life. Another part of the cliche, of course, is that you only love him for his money. It's fine to want a guy that can provide for you, but you should choose a guy that can provide for you and that you also love and have a deep connect with. He doesn't want an obvious gold digger, because he knows that will just cause his peers to judge and pity him. He wants to feel loved. Most men, rich guys included, want a woman who respects herself. Why should he like you if you don't act like you think you're likable? Show him you're worth it by taking care of your body and appearance (eat healthy, exercise, dress for success, and practice good hygiene). Usually, rich men don't want a total bimbo. They're usually pretty smart themselves, and they want someone that can keep up with them. It's more interesting for them! Study hard in school and stay interested in learning once you're out of school. Go to college if you can, and if you can't, attend free online courses from services like Coursera and keep up on the latest TEDTalks. Rich guys usually partake in at least some cultural events and you need to be able to enjoy and fit in with that environment. Have a developed interest in music, art, literature, and film. Understand and explore foreign cultures, history, and politics too (since rich guys are often world travelers). No one wants to be with someone who's completely shallow, just an empty shell that never does anything. That's boring! Get out there and do things with your life. Have hobbies and dreams for the future (that you actively pursue, don't just sit around thinking about how much you'd like to be the next big star). This will add complexity to your character and make you seem like a fuller person. Talent is always sexy and makes you more interesting. Learn a skill or build one that you already have. The easiest route to go is to become a great cook (very much a learned skill), but you could also learn to draw or paint or play an instrument. Be a passionate lover but also be passionate in how you live your life. When we're with someone that's really enjoying their life and pursues what they love, that inspires us to do the same. This is why passion is so sexy! Pursue your interests. If you've always wanted to do something, do it. Once you find your millionaire, they'll be very impressed.
Don't be the cliche. Respect yourself. Get educated. Get cultured. Do things with your life. Have talents. Be passionate.