It's important to be fashionable. Being fashionable is appropriate for every age, body type, and style. You could never say that about a trend. Trend is a personal decision, dependent upon a number of things, but being fashionable is just...required.
Look at fashion as your welcome, cliff's notes, or cover letter. It sets your tone, a quick reference to what you're all about. It introduces you. Partner that with killer confidence and you will be unstoppable!