What is the diffrance between the officers dress uniform and the regular uniform for women in the US Marines?

There is only one dress uniform that requires you to wear a skirt or dress with a no trouser option which is the evening dress. Besides that you can ask for trousers instead of skirts and shoes instead of pumps. Enlisted uniforms have red piping and on men it also includes the white belt. The officer uniform has no red piping which is the only thing that separates the two really, but the men have a belt that comes across the chest and the waist.