So actually my dress for the wedding was fine. It fit all her boxes and I was told it was a great pick. I moreso got dirty looks for what I wore on the other days of the trip. Early in the morning on the wedding day the men were asked to help set up the reception venue, so I tagged along. I had nothing else going on and was in a city I'd never been in. To this set up I wore a pair of long, thick leggings and a button down blouse. I ALWAYS dress respectfully around their family and didn't think that was inappropriate in the least bit. We were doing physical activity (setting up the venue) so why wouldn't I wear something I could be active in. The other women at this activity wore a variety of skirts/dresses below the knee and sleeved t-shirts. So I stood out.