Answer and Explanation:
body measurements for pants
Take measurements while only wearing underwear, a bodysuit, or other close-fitting clothing.
Always hold your tape measure level across your body; tilting it up or down will throw your numbers off.
Don't pull the tape measure too tight, or leave any slack — this will help get accurate numbers.
You can take your own measurements, but you'll get the most accurate numbers if you're standing naturally with your arms down, looking straight ahead. So recruit a helper, if you can!
body measurements for shirt
Collar :Measure around the base of your neck where your shirt collar sits comfortably.
Sleeve Length :Start the tape at the center back of your neck, extend the tape over the top of your shoulder and down to the point where your hand starts to widen at your wrist.
Chest: Wrap the tape measure around the widest part of your chest and back. Roughly this is right under your arms. Keep the tape measure parallel to the ground. Also take a breath in so the measurement is not constricting.
Waist: Measure around your waistline which is the narrowest part of your waist. Roughly at the hight of your belly button. Stand naturally to get a correct measurement.