Like a jacket, it should be snug but not tight. It should lay smoothly against your chest and only have minimal bunching in the back where the adjustable strap cinches you in. If the buttons show signs of pulling, it's too tight.
Beside this, how is a vest supposed to fit?
A well-fitted vest is long enough in the front to cover the man's waist (hence “waistcoat”), with no dress shirt showing between the belt and the vest. The shoulders of the vest should always lie flat against your body and below any collar points.
Likewise, can you alter a vest? Unlike a suit jacket or pants, there isn't a whole lot that can be done in terms of alterations to a waistcoat (otherwise known as a vest). A vest construction is very straight-forward, and the main areas that relate to fit are the girth and length.
Additionally, how do I know if my suit jacket is too small?
As a quick recap, here are the signs your suit doesn't fit:
- The jacket shoulders sag or bite.
- The button pulls or the button stance is higher than 1-3 fingers above your belly button.
- The jacket chest gapes open or breaks.
- The jacket doesn't cover around 80% of your butt.
- The trouser seat isn't smooth.
How do you shorten a vest?
To shorten this vest you would not simply remove an inch or two from the entire bottom. You would start with the side seam where it is now and then cut off a slanted piece from the bottom so that the front tips are 1-2 inches shorter.