Marcus J. Ranum is a photographer – mainly nudes and pinups – who also has a specific deviant art account dedicated to providing high quality photo stock. It contains a lot of nudes and naughty outfits, but also some armor and other costumes.
The samples I selected to demonstrate his palette are mostly fully clothed, expect NSFW content after this link:
The stock is provided for free with a commercial license, since his stuff is basically soooooo popular that he can’t keep up with controlling and decided to just stop reviewing how people use his stuff and just put it all out there.
Check it out.