Here is an idea if you do not wish to have your Matron of Honor wear a different color of dress, but you would still like her to be a little different. I am planning to have each of my bridesmaids carry a different color of flowers in their bouquets and then my Matron of Honor's bouquet will have all the colors of the bridemaids bouquets combined and I will carry an all white bouquet. Just an idea!
I have found the two piece dress you requested through one of our bridal shops. It is floor length with spaghetti staps in silver material is shimmer. I will send you a picture of the dress if you are interested.