We ran into that as well - the dresses for MOB were VERY matronly, or they were too young (bridesmaid dresses). My mom still wanted the top of her arms covered, but she didn't want anything too formal. It was harder to find my mom's dress than it was my own! We hit 3 different bridal shops, and everything she tried on was "too" something or other. Too hot, too long, too formal, too - whatever lol We finally went to Dillard's and found a dress there that she loved. It is a light/pewter blue, and dressy without being too formal. And it was fairly inexpensive too. I can't pull a picture from Dillard's, but here's the link: http://www.dillards.com/product/London-Times-Shimmer-Tiered-Dress_301_-1_301_502946177?splashlink=header_wapparel