>>370272396
it depends. sadly the performance system counts everything as being active at the same time, and too many outfits will probably result in a lot of textures and therefore a large download size. my advice is to not have too many drastic outfit swaps on the same avatar. stick to 2-3 at most.
as long as you keep the skinned mesh and material counts down you should be fine. try to stay on Medium performance rank when it comes to materials, meshes and skinned meshes!