Women
Long black dress (covering your ankles) in true, deep black with short or long sleeves, OR;
Black top or blouse in true, deep black with sleeves (no sparkling fabrics and no transparent fabric in the body of the top. No bare midriffs) WITH;
Long black skirt (covering your ankles) or dress trousers (no leggings or jeans)
Shiny black shoes or sandals (no long boots).
Men
Smart black pants (not jeans)
black shirt (ironed)
black socks
shiny black leather shoes
a black jacket is optional