幫人彈結婚進行曲..(急需意見 )

you don't want to be too pretty as the bride should be the center of attention. Especially if you are in the stage, you should be the "background" as this is people's wedding, not your personal concert.

I play violin and piano for friends' weddings too and as musicians, we should dress "simple elegant". Prettier or fancier than working suit (avoid looking like a waitress), but not like "going to drink (banquet)" Wearing suit can never be wrong though.

Ask the bride what the theme colour of the wedding is and what does she want you to look like, that's the best solution.

只要端正便可以，如果你是Boy,　可以穿西裝，　如果是Girl可以扮得漂亮D.

應該著得整齊一點便可,最好是西服一套.