There are hundreds of ways to spice up your fireplace decor but adding a simple, yet big and bold mirror might do just the trick. We received many questions about this beautiful round mirror from One Kings Lane that was featured in one of my latest projects and decided to share a few more similar options for good measure. One HUGE piece of advice, is go big or go home. Choose a mirror that is 34" in diameter so it fills the space. You don't want a tiny plate-size looking mirror hanging over a huge focal point, such as a fireplace.