A couple of suggestions: connect your Anisotropic rotations with the Voronoi Position channel.  Whenever you use the Color Mix node, generally mix your colors, unless you want something unusual.  Increase the PrincipledBsdf nodes metallic and sheen values for a more reflective appearance.  Also, vary the scale on the Voronoi Texture node to add more detail to the dress.  Change your background to an HDRI and render; pay close attention to how the material reflects PBR lighting as opposed to the default Poser lights.