If she has that much wealth, why would she go scratching about in Dallas Texas looking for clothes when she could hire a private jet and fly to New York, Paris or London?
Stratty - feeling a little obstreperous today.
Neiman Marcus' Trophy Room sells Designer clothing from NY, Paris, and London. There is a private room with a private showing using runway models ( I used to be one of them). She would most likely feel more at home in Dallas, Texas than she would in the more sophisticated worlds of Couture.