I believe in it as much as Madonna does. But only when it's done authentically and not as a marketing gimmick. Physical looks have nothing to do with it. But if it helps you get into state or project yourself, then do it.
Yesterday is called yesterday for a reason -- it's because today is a totally different day that has a chance to reset. It's a beautiful opportunity we all get but we think that we'll be judged or maligned for wanting to do it better. Check the conversation in your head. Well the chains of the past can keep pulling but there aren't enough chains to hold me back.
If everyone around you lives in a yesterday kind of a world, let them. You're better off living in the present.