If your textures look like plastic, it doesn't sound like a lighting problem: it sounds more like the lack of a bump map problem, either "bump" or "gradient bump".

Can you post a screenshot of your material room with the outfit nodes showing?  It would be easier to pin point the proper help. There are a few ways to achieve better looking textures.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi