Fashion starts the moment you wear something on purpose. Taste is just intention, practiced.

The line between getting dressed and dressing is intention. Nothing changes about the clothes, what changes is that you chose them for a reason you could state. Taste is not a gift some people are born holding, it is the result of making that choice often enough to get quick at it. The first few deliberate outfits usually feel like costume, which is normal and temporary.

Choose one thing tomorrow morning for a stated reason, even a small one. Then look at yourself and decide whether the reason held up. Do that daily for two weeks and you will notice you have started having opinions you can defend.