If you think a corset may be a little extreme/unsure about getting into it, you could always do a lacy lingerie set - I love frilly/lacy/see-through boy shorts and a bra with slight push up. Add some thigh highs, maybe go in a skirt/slacks and a nice fitting v-neck top.. Heels.. Nice surprise if she is undressing you, or simple enough to step out of and make an appearance in.
I'm sure the thought would count x 1,000,000. Sometimes I lounge around in boy shorts and a slightly big shirt that hangs off one shoulder, and it drives my butch crazy .. especially if I shaved my legs and smell yummy!