I got married three years ago in a Catholic Cathedral in a strapless gown (my bridesmaids also wore strapless gowns), I just wore a pashmina to cover my shoulders during the ceremony, as did the other women. I took my wedding seriously, but I also wanted a pretty, flattering dress.
When I went looking for a gown, I probably tried on 30-40 and I think there was one gown that wasn't a halter or strapless and it had clear little cap sleeves (and looked terrible on me, as did the halter style) and most of the gowns I saw were also strapless or halter or one strapped (a style that doesn't appeal to me).
We also have 500 photos from our wedding, but no head shots where I looked naked
ETA- My dress also had a bulit-in bra and lots of boning and was in no danger of falling down.