Here is a sample platform ministry dress code that we use at our church:
Platform Ministry Dress Code
Serving others in our community at [yourchurch] is a great honor and responsibility. If you are asked to appear on the platform for any public ministry in the creative arts, please dress in a way that you are not a distraction to the congregation, whether positively or negatively. Our goal as ministers to the body is to direct focus off of us and point others towards God. [yourchurch's] style is a relaxed atmosphere so that carries over to our platform ministry as well. We expect all volunteers who appear on the platform to be clean, neat, dressed in good taste, avoiding bizarre or extreme styles, including tight or revealing clothing. Dresses and skirts should be a modest length (close to the knees). The Bible emphasizes the importance of modesty, simplicity and neatness in respect to dress and personal appearance. Under all circumstances, modesty is the standard for all occasions. Also avoid excessive jewelry, piercings, fragrances and chewing gum.
The following guide concerns acceptable platform wear under normal circumstances. Its application pertains to worship leaders, musicians, singers, choir members, special music participants and other platform leadership roles. The leadership has the right to clarify any inappropriate attire at any given time.
Dress Code: A clean, neat and modest appearance should be maintained for all who ministry on the platform at [yourchurch]. Casual dress pants are acceptable attire so as long as the appearance is clean, neat and modest. This means that the following are not acceptable: formal dress attire; pants, dresses or skirts that are too tight or loose, immodest, or have holes that you can see through; shirts and tops that are too tight or loose, immodest, or have questionable content on them; tennis shoes; excessive jewelry or fragrances; chewing gum.
Immodest: Our working definition of immodest includes anything that would embarrass, offend, or shock people – especially in reference to sexuality or exposure of parts of the body that might cause another to stumble or be offended.