A nice mirror is one of the focal points of a bathroom. You want it to be large to not only help you get ready, but to reflect as much light as you need especially for bathrooms without windows
Round Mirror
Another mirror option, these come in with built-in lights to create the vanity atmosphere without dealing with finicky light strips
Wall Mirror: Amplify Space Wallscape Reflections
A vanity light fixture is necessary in every bathroom. This one is handy as it hangs up over the mirror but is rechargeable, so no need to replace light bulbs. Also can change light temperatures from cool to warm for whatever mood you're feeling