It depends what philosophy you are aiming for. The Liberace/Elton John look of flamboyance? Tuxedo formality? Somewhere in between?
When I perform with my master instructor, he wears all the sensible stuff, like a collared shirt, slacks, long socks, like all the above, but no tie nor jacket. I wear a black turtle neck, black slacks, and my patented 5-toe shoes. We have shared the stage with performers that look like Dame Edna Everage. But I always bare in mind that we are in the SF Bay Area, and compared to the participants in the Gay Pride Parade, even Dame Edna looks sane while holding a classical guitar.
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