LOL I do not wear button shirts, but I'd have to say it would vary. Depending on the length of the shirt. I just counted buttons on a large mans shirt and there were 8. I just checked a female co-workers shirt and there were 5, but the first button was far down. So again, it would depend on the size and style of shirt. Also, some shirts have close set buttons compared to others.

Did you know the buttons on a mans shirt are on one side and on a womens they are on the other? There may be exceptions to this of course, but that's how it usually is.