fashion victim
From Longman Dictionary of Contemporary Englishfashion victimˈfashion ˌvictim noun [countable] informal someone who always wears what is fashionable, even if it makes them look badExamples from the Corpusfashion victim• I don't want to be a fashion victim.• It wasn't about creating quirky objects for kitsch fashion victim consumers, it was about improving the real world.• Pleats create a weird-looking smock effect, appealing to the adventurous with a touch of fashion victim in them.