I read somewhere (probably on TK) that the bridesmaids dresses should not be in a fabric that is more formal than the bride's dress. It got me thinking, if the three dresses that I'm possibly choosing are all organza, what fabrics are "less formal" than my dress? I was going to put my girls in satin dresses, but now I don't know. Is there a chart that lists fabrics from "most formal" to "least formal?" Sorry for the dumb question.