Looks like it is a little too close to the wall for a frame. You could buy the mirror j-channel in a black finish and miter the corners. Other than that I do not see too much you could do.

With out cutting the mirror down??? You might head to the local frame store and get some picture frame stock cut to fit....but you will need room where the mirror hits the wall. Paint it to match the cabinet??

Not much can be added to what has already been said, but what a place to have a floor register. I wouldn't worry about the mirror, instead, get a decorative floor register matching your floor it will look much better, and if you can order a filler matching that cabinet and ask the guy who installed the vanity, take the doors and drawers out and slip the filler on both sides of the vanity to have a nice and finished look.

To GN builder. Thank you. This is a new build and it was mostly complete when I signed. I have not closed yet and am wondering If you think that the fact that the sink is not centered in the granite would be something they would correct. Definitely going to address the crooked drawer also.

Arcy-gw Thanks. I was thinking of Glueing a frame right on top of the mirror edges. Just Undecided on what type of design would Look good.

@Trish B New or not someone screwed up centering that top... I noticed it was off (I thought this was a DIY job)... IMO the top needed to be trimmed to fit the opening and they cut one side instead of cutting both sides to keep equal sides and the faucet centered.

They should fix that (not sure if they will because they need to order a new top) but you can press them to do it, after all, they screwed up the installation and it looks way off. The drawer should definitely be fixed.

Good luck

Maybe get a wood frame to go over the top and cover it with capiz shells (or those little mother-of-pearl tiles). The colors in there are just right for the sea shell treatment.

I’d make a frame using the same baseboard moulding and color. I’d attach it to the mirror with command strips. I’d also paint the floor register to blend in with the floor. I just saw a MaCenna XO youtube video. She made her own frame for a Frame TV, and had some good tips for how to make a frame. Search for Macenna XO living room makeover * DIY TV frame.