Clients of professional service organizations generally do not want the people who work for them to be flashy, extravagant, or prone to calling attention to themselves. They want service. They want reliability. They want sobriety. Calling excess attention to yourself in any way that is not directly related to identifying, analyzing, and solving the client's needs is both offputting and counterproductive.An old truism of the theatre is that you shouldn't ever perform in front of anything more interesting than your act. In front of the client it's just as important to be more interesting than your clothes.
In life, actually.