Concert Dress GIRLS Black Knit Princess Gowns. Girl’s concert dress must be ordered through the choir. Order forms for concert uniforms will be given to each chorister at the first rehearsal with specific instructions regarding prices, measurements and deadlines. Sample sizes will be available. Choristers must also wear black opaque stockings or tights and black dress shoes. BOYS White tuxedo shirts, black tuxedo pants and jackets, black cummerbunds and bow ties. More specific details will be handed out at the first rehearsal. If your chorister already has a tuxedo he may wear it. Black dress shoes and socks are required.