+P. Warren Brown
I believe it goes deeper than shallow, self-esteem. I'd say some women are genetically hardwired to utilize environmental elements to enhance their ability to socialize and obtain forms of social dominance.
In Urban Anthropology terms, the "Bling Aspect" is used to establish a manner of societal heirarchy as well as lure suitable mates, a phenomenon manifested in realm of males in the choice of vehicular conveyance, for example. The man who drives the used Jugo will not attract as much favorable attention from the opposite sex as the man in the new Mercedes Benz.