Goldman Sachs and Teen Vogue picked out young women ages 13-29 that they defined as fashion forward (or "It Girls"), and polled these select girls to find out which brands they love the most.

To find the top 50 brands, Goldman "polled over 1,200 Teen Vogue 'It Girls' on roughly 350 brands. Respondents selected brands based on awareness, favorability, and word-of-mouth." The composite ...