In a two-buttoned suit, you should always button the top button and never the second.

What is the second button on a suit for?

The traditional way to button a two-button jacket is to fasten the top button and leave the lower undone. The top button on these jackets should ALWAYS be buttoned when standing. Unbutton the jacket only when sitting down to avoid creases. Fasten it again as soon as you stand up from your seat.

Which is better 2 button or 3 button suit?

For the man with a shorter or larger torso, the three-button suit is not the best option ‒ we suggest you stick with the two-button jacket instead, which is much more forgiving. When to Wear it: Since this jacket has you more buttoned up, it's a great choice for more formal occasions.