When you order a color swatch, it includes every fabric that can be made in the chosen color, excluding lace and other specialty fabrics. Swatches can be found here for US customers and here for Canadian customers.
Each of the included fabrics will be listed at the top of the swatch in the order that they are arranged (one layer on top of the next). Generally, there will be only 1 layer of each fabric but if Tulle is listed on your swatch, there will be 2 layers of that fabric because it is so sheer.
In the screenshot below, we can see a close up of the top of a Mulberry swatch and the lists of fabrics included: Chiffon, Liner, Satin, and Charmeuse.
To get an idea of how your dress will look, just hold the main fabric type your dress is made of (Chiffon, Satin, etc.) over the lining fabric on the swatch. While most of our dresses do have two layers of lining and one layer of the main fabric on top, this is the best way to see how the dresses will look once they arrive.
If the color you want comes in Mesh, you will be sent a separate swatch that includes Mesh and Stretch Lining, which we use for the majority of our Mesh styles. You would just hold these two together to see how our Mesh dresses would look in that color.
We always recommend ordering swatches before deciding on a color.