I think a wall of mirror will look best like beverly’s first photo

This is how I pictured it when we were planning it, but obviously didn't end up spaced that way.

I also think the vanity should have a bit longer and up against that right wall. A pony wall on the left would have worked better too, to avoid those narrow gaps.

Sorry abit late in the game IMO. First why not a vanity that fit the space , that center sconce is off center and honestly the best choice would be a whole wall of mirror and that would have required the mirror to be cut to attach the sconces which IMO was not the right choice . Now I guess two simple mirrors one above each sink and that is not ideal if you put makeup on in the bathoorm.. If your vision was what you show in the pic did you not share that with the installer ?

Plate mirror. Counter to ceiling, wall to wall

Beverly’s first photo would look great.

How much space do you have between the window and counter top?

There are going to be problems because of the location of the electrical boxes for the lights and electrical boxes for the outlets. They are all too close to the edge of the mirror and it's likely no glazer is going to be willing to cut the mirror to accommodate these too near the edge cut outs.

or you could just install the round mirrors. There's no fixing the incorrect placement of the sinks short of replacing the vanity.

So many expensive materials in this bath with so little planning. Beverly you are of course right, they won’t cut plate mirror with penetrations that close to the edge.

Maybe the big mirror could stop just at the outer lights and only cut where the middle light is?

There is 48" from the top of the backsplash to the bottom of the window. There was a lot of planning that went into everything, but obviously not taking all of the elements into account. My GC says he has a good mirror company that can do it. If not, I'll try the round mirrors or ker9's idea. Thanks for all of the suggestions.

I would do a wall to wall mirror and:

Remove the sconces. Decide on mirror. Select lighting to work around mirror and leave you in the best light. I dislike individual mirrors because U alwatpys end yo standing between them

I agree remove the lights, put up a full size mirror and mirror mount the lights. every thing is off center now to the sinks. It also looks like the sconces are too long, and would be a PIA when it comes to using the outlets. IF you do stay with this setup, consider smaller sconces and oval mirrors. Either way, oval mirrors.

Hi, unfortunately I would agree with the colleagues answers above - there wasn’t much of planning ahead.
But the good news is that a solution can be found.
Because sinks are centered on the cabinet but not on the walkable area, I would suggest a wall mirror (red area) with built-in sockets and scones relocated, both horizontally.
Hope this helps.

Visually, I like Aitecch's design.