How much do you wish to reflect? Go find a floor length mirror in a department store and stand back as far as you would want to in your bathroom. Depends on the depth of your vanity. Have a second friend measure about how high that would be at 6'2" plus a bit. I don't think it would be good to have the top edge of my head in the mirror when I am standing in front of the sink. More above that. OR what do you have now? Do you want more or less? In a new bathroom more mirror is better especially when it reflects beautifull other stuff. (that would be YOU!) This is YOUR bathroom, think about it that way. -Babka

Thank you pal for those suggestions. They are both gorgeous. The chandy is polished nickel so we don't need chrome. I will try to find some less expensive versions of the ones you posted --- or wait for a very good sale. We are going to ask the electrician to leave us extra wire so we can adjust the height. We moved the box down to 7 feet 6 inches, but it can go even lower with the extra wire (or higher). It all depends on what we can find. Carol

20X42, you need to proportion the mirror to the vanity so if there is room to go wider, plus the 18"W mirror is too narrow. Also 42"-44" is a typical light height rough-in if there is a light above the mirror from the top of the backsplash, so 42 tall mirror is a common size. Good luck

I have loved that bathroom for several years. I used that shape for a medallion over a range in a new construction setting but not mirror. It takes a experienced tiler to do this properly. Here is a smaller one. Stunning look but you need very level and squared surfaces and a great tile person to pull this off.