The phrase "passion for fashion" refers to a person's enthusiasm, interest or love towards clothing and style. It is an expression used to describe someone who has a strong desire to stay updated with current trends in the world of fashion, and enjoys incorporating them into their personal style. This can include keeping track of new designers, following fashion weeks, reading fashion magazines, and attending events related to the industry. In short, having a "passion for fashion" means being deeply interested and invested in all things fashionable.