The primary purpose of a business headshot is to show to potential clients and associates that you are professional, reliable, trustworthy, and approachable. Looking approachable yet confident in a headshot all starts with what you decide to wear. If you wear clothing you do not feel comfortable in, it will show in your expression.
Clothing is the most important factor in your headshot, but it is definitely not the focus. When you wear proper clothing, it allows your face to command attention in the portrait and the clothing itself becomes secondary. As in life, wearing the wrong clothing takes center stage and takes attention from where you want it – on you, or in this case, on your face.