You are your most visual and most important Asset. Your presence is not a neutral variable. It will contribute either positively or negatively, but it will not be neutral in others' perception of you. Your choice of attire is an immediate and readily obtained informational cue. As the quality of your presentation increases, so does persuasive communication effectiveness and credibility.
Prime impressions can make or break.
Your greater power is in a strong, stylish, professional presence which reflects quality, appropriateness, and good taste to those you interact with.