Pretty much everyone puts 4 buttons on everything now. Some Italian tailors like 3 buttons, and a few English tailors also do three. Some American do 2, and in the 60s it was popular to have only 1 button on the sleeves. There are no rules to this. Make sure the sleeve length is perfect before the buttonholes are made. Some people get the suit shipped with the buttonholes already in, and that's a big mistake.
1/18/14 at 8:08pm