I actually found a bridesmaid's dress uglier than the one I wore for my sister's wedding. Coincidently made by the same designer. If I were a mean person (and wanted my bridesmaids to look fug) they'd all be sporting this:
http://weddings.theknot.com/Dresses/53719/detailview.aspx?id=53719&type=31&Dresses+Gown+Price+Range=%24&TM=31&Dresses+Gown+Type=Bridesmaids