Unless there’s some direct mention of a partially unclothed Leia in one of the drafts or something like that I’ll have to agree with screams in the void on this, though I can see what ATMachine getting at with the last drawing (though I also think it’s probably just meant to illustrate the draping of the cloth).
However, this isn’t a conversation we should be continuing here in this thread.
As a side note; I just made a Making-Of Documentaries - YouTube/Vimeo/etc. finds thread in the Off Topic section if anyone wants to share some non-SW making-of documentaries.