Here's proof that you don't need to be an expert tailor to know if a suit fits your body perfectly. According to
Esquire, the only tools you'll need is your hands and a mirror.

So the next time you're getting a suit of the rack, keep in mind the following things mentioned below:
- Shoulder pads end with your shoulders.
- Your flat hand should slip easily into your suit under the lapels when the top (or middle) button is fastened. If you put a fist in, the suit should pull at the button.
- The top button of a two-button suit - or the middle button of a three-button suit - should not fall below your navel.
- With your arms at your sides, your knuckles should be even with the bottom of your jacket.
- Jacket sleeves should fall where the base of your thumb meets your wrist.
- Between a quarter and a half inch of shirt cuff should be visible.
- One inch of break [in the leg].
If any of these don't fit the way they're supposed to, then you'll need to head to a tailor.
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