Of course Grace, there is a reason to dress up. Like awards shows and such. Going on stage is certainly a reason to dress up. I like the blouse with shorts and short boots thing you have going. There are so many options for you, you are only just beginning. I've done my share of costume for stage, now I find the preparation quite laborious. I'm not being righteous, just lazy. Hell, I've become too lazy to tour. Let them come to me. And they do. Masha Allah.
I want to use an avatar for my live show. That means computers, monitors, and motion sensors. How to combine that with a live band would be interesting. The band can just see me shirtless in a sarong.
Anyway, I don't believe that dressing up compromises the music. They are two separate directions of thought and feeling. Neither do I believe that dressing down makes you more righteous. Modest maybe, but not more righteous.
Nina Hagen is incredible beyond words! Just being her is dress up.