It can go with a burgundy coat. It will look good. Don't match it with light gray, because your skirt is light in color, which will appear without layering. I don't know what your suit jacket is like. Too short and too long is not good. Black can't be wrong, but it won't shine. It needs help from bags, shoes or other accessories. If only beige is used, the effect may not be very good. You can use a colored thin belt, such as brown, tied at the high waist position to lengthen the proportion of the lower body, and the corresponding matching bags and shoes will look better and the style will be fresher.