It’s a small detail that many people never notice until someone points it out: men’s and women’s shirts traditionally have buttons on opposite sides. Men’s shirts generally button on the right, while women’s garments usually have buttons on the left. But how did this unusual clothing tradition begin?

Buttons became popular in Europe during the Middle Ages and were once considered luxury items. They could be made from expensive materials such as gold, silver, pearls, ivory, and gemstones. Wealthy people often used decorative buttons to display their status, while ordinary people relied more on ties, laces, and simpler fasteners. One commonly cited explanation for women’s button placement is that wealthy women were often dressed by servants. Since most people were right-handed, buttons positioned on the woman’s left side may have been easier for a servant standing opposite her to fasten.

Men’s button placement is sometimes linked to practicality and military clothing. With many men being right-handed and soldiers carrying weapons, buttons on the right may have made garments easier to manage with the dominant hand. Military uniforms also had a major influence on civilian fashion, with coats, jackets, and other designs eventually becoming popular outside the military. Over time, these conventions became established parts of men’s clothing.

Today, there is little practical reason for men’s and women’s shirts to use opposite button arrangements. Modern clothing is designed for people to dress themselves, yet manufacturers continue the tradition because it has become familiar and widely expected. Although some brands have experimented with different designs, the convention remains common. So, the next time you button a shirt, remember that this tiny detail may reflect centuries of fashion, social customs, and historical traditions.