The key to remember when buttoning a suit is that you should never button the bottom button. When putting on a suit jacket, check to see what kind of jacket it is, then use a simple mnemonic to know which buttons to button.
- Check the number of buttons on the suit
Suit jackets typically contain one to three buttons. Avoid wearing four-button suit jackets in a business setting. Single-breasted suits have one vertical row of buttons, while double-breasted suits have two.
- Use the mnemonic to button the suit
Use the mnemonic "sometimes, always, never" when buttoning a suit. For a three-button suit jacket, you should sometimes button the top button, always button the middle and never button the bottom. Start the mnemonic in the middle for a two-button suit, always buttoning the middle button. One-button suits should always be buttoned.
- Leave the bottom button unbuttoned
Never button the bottom button of any suit jacket. Unbutton all buttons when you sit down, then rebutton the appropriate buttons when you stand up.