Why don't you make the whole wall mirrored with cut outs around the windows and then rehang some more modern lights. Or if you have bank take the windows out and just put in an high transom window up where the lights are and then seal up the window openings and put in his/hers mirrors.

I gotta say I had to read this post over several times before I was sure I understood what you were asking. I have no detailed factual way of doing it but is there a way to install a track wall to wall and have 3 mirror bipass eachother and either be closed or open and all in the center stacked. I am just trying to be inventive and I think it's possible, at what cost and sacrifice I don't know....Curious see read the others input is.. Good Luck!

If there Is 2 sinks, one in front of each window. I'd have 2 mirrors cut and framed. Suspend each of them from the ceiling, directly in front of each window and about 4" away from the window so you can still operate it. The mirrors should be slightly smaller than the windows so the windows act like an additional frame to the mirrors. The lighting should be the entire width or 2 separate fixtures.

I have seen a bypass track mirror on Houzz. It is possible! Would be perfect here.

How funny, I had this set-up in a former home. Since I am incredibly near-sighted, having a mirror on the return walls turned out to be so much more functional for me. In my current home, I have a really slick looking mirror on an arm, even though I have the traditional over sink mirror.

Put in a 3-way mirror. The center one mounted in the middle with hinged mirrors on both sides. That way you can still access the windows. ....and see the back of your hair!

How about one large mirror between the windows and hang small wall mount magnifying mirrors on each side? Or better yet from the ceiling! You will be able to swivel it in every diretion.

Have two large mirrors that are on arms, so they can be pulled in front of you when needed, and then retract/swing back into the center area when not.

Jordan is onto something. I would have two mirrors mounted on plywood and framed. Attach piano hinges to one long side and to the walls next to the windows. Paint the backs so when you fold them against the wall they still look attractive.

That is creative thinking!

i wonder what you came up with. i really like the idea of the mirror on a piano hinge on the side walls but i was thinking a picture or art of some kind on the back. what did you finally do? i'm in the process now of trying to solve this problem.