Keep letting her know that you are good with it and give her details on what will happen. Then just let nature take it's course. But ensure that she shares all of the details with you.
Who would you like to see your wife/girlfriend naked that probably shouldn't? Friend, relative, co-worker, stranger, boss?
I would love for one of my wife's co-workers to see her naked and seduce her.
A friend of mine saw her tits. We where camping and getting wound up. I had her topless and he walked by. She didn't know but it turned me on like crazy.
Who has seen your wife/girlfriend naked or semi naked but shouldn't have? Like maybe neighbors, boss, family members? How did she and you feel about it?