Choosing the right bathroom mirror means thinking about size and placement as...

https://kylersgreatblogs.lumenforgex.com/posts/what-mirror-width-rule-should-i-follow-if-i-am-using-sconces

Choosing the right bathroom mirror means thinking about size and placement as much as style. A good rule of thumb is to pick a mirror that’s about 70 to 80 percent of your vanity’s width to keep proportions balanced