I'm actually waiting on the guidelines from my church, but I know that we cannot show shoulders or cleavage. When I went shopping at Davids Bridal for my dress (and my bridesmaids) I was aware that I was probably going to have to add a piece in later for me, but I didn't know for my bridesmaids too!
Obviously most BM dresses (and wedding dresses) are not very conservative so I can't be the first one with this issue.
What did you guys add to your dresses to make it acceptable for the ceremony? I saw that DB has bolero jackets, I'm considering that, and then maybe having my BMs sew in a little piece in the cleavage area (they can remove it for the reception if they want to?)