Embellished One-Shoulder Dress

I got white color for the event. It is not polyester. The tag says it is rayon, and it feels like rayon, which is good for me. The size says one size, but I think it fits sizes 8-10, maybe 12 the most. It won't fit plus size women. The dress looks beautiful on but it is see through, I think it might be because of white color I choose.,