'Conquest' in the sense that humans think themselves above all creatures, and they can make use of them in any way they like -- for food, for companionship, for fashion.
[Moving to help PM get into that boot and help her tie it up?]
I think it might just apply to any world as I'd like to believe that appreciation of beauty is universal. But yes -- I have seen feather and fur boas that don't really serve a warming function, but more of an accessory. Hats can be adorned with fur and feathers as well. Animal horns and bones are not spared as they are used for jewelry.