Layering is often considered a part of casual wear. However, it can very well be worn as formal clothing for office wear too. Here's what you need to do. Find that asymmetrical leather jacket and team it with your asymmetrical little black dress. Next, you will need medium-heeled boots to match the dress, and bring out the formal tone in your outfit for the day. Keep this attire two-tone to create a slightly serious effect. While layering for a formal dress code, keep the colors sober, simple, and sophisticated.