Narrow down the research topic

First, i want do my research topic is " young consumer and fashion branding" . But this topic is unclear and fashion area is too big. So, i tried to found some literature and journal to narrow down my topic. Lastly. i found that the topic is attitudes of young consumer towards branding clothes. I want to observed the influence of the young consumer to purchase branding clothes. Is that for expression themselves or for the quality of the branding clothes.