The contrast between a naked submissive and a clothed dominant is apowerful one. People are always aware of the advantage someone nearby holds over them; being naked around clothed people makes a person very suddenlyaware of their vulnerability.
One popular type of porn and kink dynamic described as 'ClothedFemale, Naked Male' (CFNM) is a codified version of that phenomenon.Some subs have a really powerful response anytime that you emphasize theirnudity with your own non-nudity. However, not all subs find comparativeexposure humiliating.
On the other side of the coin, a male sub commanded to stand naked in the corner while his dominant and her nice, clothed friends sat around and had a conversation. He was humiliated beyond belief and hopelessly turned on, just by being naked around clothed people.