If it's that rare, then it's a good idea to make the few that do exist easier to find.

If it's that rare, why should we consider it in the first place? I personally also don't really see a difference between a normal suit and a wedding suit. And regarding Sheets or other unconventional clothes, the tag "Bride" would still suffice. Also "wedding outfit" and "Bride" should be almost synonymous. Since the only scenario, I'd see a "wedding outfit" without a "bride" would be a gay wedding.

not very often which is precisely why i said to keep it general. that way we don't need an entirely separate tag for [wedding suit], both dresses and the uncommon wedditing suits belong to [wedding costume/outfit]. not to mention, there are galleries where the marriage uses sheets or some other cloth that isn't necessarily a dress

But how often does a wedding suit come up?

i mean that's why i said to keep it general. so that the fringe galleries with wedding suits are by definition included

Maybe. But since wedding outfits in hentai most commonly are wedding dresses, I think, it's better to use wedding dress.

it might be best to keep it only as the general tag instead of separating by gender (suit vs dress), since it's not a terribly common theme/outfit. at least I dont think. could be wrong create tag wedding costume +8