Should there be a tag for this yukata based on the episode, or just leave it search-able in K-On! Japanese_clothing?

I think there should be a tag for the specific costume (and any parodies of it, like the Ritsu/Mio fanart) though I'm not entirely sure what the tag should be named.

Besides YuiAzu, do the artist tag it a certain way? I only get titles and commentary.

I would festival_yukata, but this style would apply to a lot of non-K-On! images.