Taking a vested interest!
However, you can make the suit a little more trendy by changing up the color of the vest. Â The 3-piece suit will still be classy, but you will be adding a little more personal expression and style. Â A two-toned 3-piece is a fun and classy way to go.
A vest also provides a layering effect.  It’ll insulate you better for the colder months.  Another aspect the vest provides is tie stability. When wearing a vest, your tie will stay confined and in the same place, and I think it adds to your look. When you are not wearing a vest, a tie bar is a great accessory to pin your tie to your shirt to keep it in it’s proper place.
To answer this question of buttoning the last button on the vest, I’m going to look back in history. According to legend, King Edward VII was too large for his vest, so he unbuttoned the bottom button. Since he was king, all followed in his footsteps. This is one of the first known references to this trend. However, it is also a designer thing and personal preference.







