I literally didn't. You can go back yourself and see that I said :
"Only OP knows her own circles. In mine a guest wearing that would be laughed at"
Whilst I couldn't care less if you think I'm lying, I wasn't actually referring to myself or my social circle. Weddings are famously known as multi-generational affairs, and whilst neither me or my friends would choose personally to wear a dress like this (it's just not our taste), I know that many of the older generation, or the less worldly-wise in my backwater family circles would be commenting and laughing up their sleeves, wrongly obviously.
Whilst people shouldn't worry what people think about them, OP must have asked for opinions in Aibu, for a reason.