Noun
fashion victim (plural fashion victims)
(slang) A person who slavishly follows current fashion.
If you wear clothes that don't suit you, you're a fashion victim. You have to wear clothes that make you look better. Vivienne Westwood
I believe that if you think about what style means, you won't become a fashion victim. John Varvatos
I don't like it when a woman looks like a fashion victim. Ralph Lauren