M.,
It's great that you are allowing her to "express" herself by letting her choose her clothes. she is also flexing her decision making muscles, which is another great. Of course, children don't always make choices we want them to! Maybe you could give her a couple of choices each morning (since she seems to change her mind overnight!)- lay out 2-3 shirts, 2-3 bottoms, and make them all mix and match so whatever she chooses will be ok. Then you are giving her choices still, which she seems to insist on, but you are also setting limits on them. If she insists on tights, can she wear them under pants? Or send sweats to wear over them just for outside play? And the paint and glue- I hear you! I work with toddlers, and wear paint and glue daily. Typically, though, with a little pretreating, it should all wash out. Good luck, and keep up the great work!!! There's nothing crazier for your morning than a strong willed child- which my son was and still is at 11!