Vests are best worn with single-breasted suits (so it’s actually visible). if you’re going to be wearing your suit in a cold climate, a vest can add a lot of warmth. It also adds a formal touch to your suit.
19. Sleeve cuffs should be exposed about 1/2 an inch.
For a harmonious look, try to match the visible cuff length to the amount of collar that is visible at the back of the neck.
20. When you get your suit home, you’ll need a seam ripper or a small, sharp pair of scissors.
Unstitch the jacket’s pockets, remove the tack stitches from the jacket’s vents, and remove the little embroidered label from the jacket’s left sleeve. Do this very carefully to ensure you don’t actually rip the fabric or neighboring threads.
21. Make sure that your socks are long enough that there’s no exposed leg when sitting down.