In my case the first part of my exam I'm only wearing my briefs - nothing else - in the second part off the come and then I'm in my "birthday suit"!
But I know from a friend of mine, that his undressing happens step by step during his exam.
In the first 10 minutes comes off only his shirt, then his undershirt - later his trowsers and so on. At the end of the exam he has returned about 4 to 5 times into the cubicle to hang up an other piece of clothes. I realy cant get the sense of that!
What are your experiences?