>>304994648
Glad you asked.
Mostly "dance" avatars are supposed to be optimized so they don't affect the perfomance of others and they also don't bother other people, not that many bones (forget about adding dynamic bones or just a few), one skinned meshes and few materials.
Now, if you ask about fashion, is up to you, just to give you a few examples, from videogames you can take as example yakuza 0, and for IRL stuff, you can think about the movie Saturday Night Fever.
Pic related, just as a reference, but you are free to do what you want.