Yesterday morning, I noticed Ryan Seacrest on talk show 'Live with Kelly and Ryan' was wearing a tie bar. I have a vast collection of assorted sizes in my valet box, but haven't worn them in some time. Likely because I forget to take one when racing to the office! Anyway, I often see men wearing them incorrectly. The tie bar's location is often placed too high or too low. The rule is simple: It goes between the third and fourth buttons of your dress shirt. Figure 1 below demonstrates it's proper resting place. By the way, fashion-smart Seacrest was wearing it correctly. :)
Two other rules to consider about tie bars:
A tie bar doesn't just clip the front end of your tie to the back end. It fastens both ends to the placket of your shirt.
Never wear a tie bar that's wider than your tie. Keep things narrow.
GQ has a quick video demonstrating all of this below. While you check this out, I'm going to pull out my tie anchors!