It really is difficult to take this nonsense. Forty, 50 years ago the habit may well have said something about a person's commitment to poverty. It seems today the habit, in many cases, is a fashion accessory.
Put simply, by wearing a “habit” (a set of distinctive clothing), consecrated religious are able to visibly express to themselves and to others their state as having given their lives totally to Christ. The habit also serves the purpose of identifying to what community or order a consecrated religious belongs, as well as to supplement their lives of poverty (having only one outfit theoretically makes our wardrobe budget much lighter).