Not directly related to fashion, or the fashion industry(adjective)
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Use "nonfashion" in a sentence
"Gilt Chief Executive Kevin Ryan said the company's valuation, double what it commanded in another capital raising a year ago, is justified by Gilt's ability to sell nonfashion merchandise and full-price products as well as its rapid growth potential."
"A nonfashion friend once pleaded with me to show her my wardrobe."
"But not if it isn't balanced by a page of affordable gym bags -- and a mix of literate, nonfashion articles."