"was professionally cleaned after reception"= helpful
"never worn, still has tags" = Helpful
"worn once" = NOT HELPFUL.
I mean seriously, even though there's that fallacy about being able to wear bridesmaid dresses for later occasions, does anyone think any of these dresses have seen more than 10 hours use? Or does your workplace have chapel train Thursday to go with Casual Friday? Oh, I'll pick this dress- it was only worn once!
Also, the synonym for "laughably outdated" is not "vintage".