Before you purchase new vanity lights, here are some things to keep in mind.
First, you want to check and see if your electrical box is centered over your vanity. If it is, you've got a wider selection of vanity lights to choose from. If your vanity light is not centered over your sink/mirror, then you most likely want to pick out a light that has a large back plate. This allows you to slide the fixture over the electrical area to center it with the vanity.
Next, you want to know if you want your lights to point up or down. The majority of bathroom lights can be hung either way. Pointing the lights up in your bathroom will give you more of an ambiance feel and gives a more dramatic effect to the area, whereas pointing the lights down is more task oriented for doing make up or any other tasks you see yourself doing in front of the mirror.
Finally, you want to make sure your vanity light fits your style! Make the light unique and yours. Give it some personality that goes along with your bathroom.
You can check out our variety of bathroom lights here: http://bit.ly/1kwovgt