Which fashion theory describes how personal influence plays the key role in the transmission of fashion information that relies on two kinds of consumers-innovators and influentials-in popularizing new looks?

This is the trickle across theory. People in each social group tend to look at the "leaders" of their group as a way of determining what is fashionable, and then adjust their views accordingly. Leaders of each group are able to access these styles at various prices at about the same time.