27. Why are the buttons on different sides, on guys' and girls' shirts?

It's an old tradition that began when fancy women used to get dressed with the help of a chambermaid, but men didn't. Seamstresses put the buttons on the side of the garment that facilitates right-handedness. So, self-dressing men had the buttons running along the left side of the shirt while women, who needed help getting dressed, had the buttons running along the right side.