There's an RPG.net thread about Darth Vader's costume.  Someone posted a picture often seen in the more fanboyish parts of the internet of a girl in a sort of "bondage queen Vader" outift that, while cool, never quite worked for me.  So this evening I sat down and hashed out a rough sketch of what might work better.

Very rough sketch.

Really rough.

You have been warned.

(Because it's a really, really rough sketch)

My improvements over the original are mostly keeping elements from the real Darth Vader costume.  The armor on the legs (now equipped with spurs) and the paldrons (now attatched to the collar with chains) harken back to the real deal.  The cape-like thing extending from the helmet both feminizes the suit even further, and harkens back to Vader's cape.  If I were to really make this costume for some insane reason, I'd use sheer black or gray fabric with a metalic tint.

The main problem I had with the original bondage queen vader design is the abrupt cut-off of the helmet.  I think the collar solves that nicely, and transitions well to the halter top.  I made up for covering up the top of the breasts by throwing in a little undercleavage.  Cause that's just the way I roll.

(Well, really I roll nothing at all like that, since I'm a short, fat guy instead of a hot babe, and I don't do cosplay)