I just thought that I should ask if you have spoken to the pastor about the dress. When we got married, not that long ago, no strapless gowns or spaghetti straps were allowed for a nuptial Mass. This applied to all members of the bridal party (bride, bridesmaids, mothers) though they couldn’t really stop the guests.
Since you are 8 months pre-wedding, I didn’t know if you had gotten that far with the talks at Church. Not all pastors feel the same but this was a pretty liberal parish. It would be a shame to have to make a switch or alteraltion closer to the date.