Forgive me if this has cropped up before, but I'm just curious.

Is there any tagging structure for a character's outfit, rather than just their style?

For example, Rouge the bat has a few distinct oufits: the standard, the one worn in sonic heroes, and the one worn in sonic riders, to name a few.

So would adding the tags "rouge_suit", "rouge_suit_(heroes)" and "rouge_suit_(riders)" on top of the other tags help for the sake of correctly tagging characters other than rouge wearing these suits be acceptable, or just overkill?

There's an alternate_costume tag.
However, the character simply wearing different clothes is not something that is normally tagged.