You could add a pretty frame to it!
It will depend on if you have a mirror that goes right up to the ceiling. If there is space above and around the sides, you could frame it with wood. Or put lights around it. You could add mirror butterflies or other stick ons.
I framed the mirror above the vanity in our bathroom and here is how I did it.... https://www.homeroad.net/2018/04/framing-bathroom-mirror.html