I actually have a few questions here. Manton, your "rule-based" answers are allowed, though might not be listened to. I am wearing a one-button, single breasted peak lapel, unvented. Lapels are satin. The trousers have terrific side adjusters and buttons for braces. So, here are my questions: (1) Is a formal shirt a necessity? I have white, french cuff shirts in herringbone, twill, and 140s sea island. All with nice thick MOPs. The former two are Jantzen, the latter is a Polo Collection/Lorenzini. They all fit well, with the former two obviously fitting best. I saw a Brioni formal shirt in my size on Ebay, but don't want to drop the $125 if I don't really need to. (2) Should I go with vest or cumberbund? (3) Why do the pants have braces buttons? Is wearing suspenders with a tux considered something you can do? Or are the buttons for the cumberbund? Thanks.