When you travel to a different country you have to switch currency, and you usually have to wait in line. In this case Kanye is referring to women that are after his money. But the money comes first — no gold diggers, please.
Lanvin is a high fashion house that was founded in France. It is no longer a member of the Chambre Syndicale de la Haute Couture, therefore it does not legally make Haute Couture. Kanye implies that he doesn’t have to show off with a fancy logo, everyone already knows he is rich.
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