Plain dress is a type of clothing worn by certain religious groups, such as the Amish and Mennonites. Instead of wearing colorful and trendy clothes, they choose to wear simple and modest outfits made from solid fabrics, usually in darker colors.
This means no bright colors or patterns, no logos or graphics, and no fancy accessories like jewelry or makeup. This is because they believe that clothing should only serve to cover and protect the body, not to show off or draw attention. They also believe in living a simple lifestyle, which includes dressing plainly.
Plain dress is often handmade and can sometimes include special features, like hooks and eyes instead of buttons, or suspenders instead of belts. It may look a little different from what you're used to seeing, but it's an important part of these religious groups' way of life.