If anyone in your wedding party requires a tuxedo but lives out of town then his measurements will need to be sent into the local tuxedo shop. The best way to get these measurements is to have him visit a tuxedo shop in his area to get measured. If this is not possible then here are some guidelines you can send him so that he can record the required measurements for a tuxedo. Advise him not to take them himself but to ask a friend for help.
HEIGHT & WEIGHT: For your height, stand straight up, back against a wall and measure from the top of your head to the floor without shoes. To determine your weight use an accurate scale. (Do not lie) A gym or recreation centre is a good place to go if you don’t have a scale.
WAIST: Tuxedo pants have a longer rise. They are intended to be worn higher on the waist. To find the proper fit, measure just above the hipbone across the navel. Insert a finger or two between the measuring tape and your body so the waist will be comfortable all day.
HIP: After you have measured your waist you need to make sure that your hips will be able to fit into the tuxedo pants without pulling. This is usually not an issue for a man, but maybe if a woman is planning to wear a tuxedo. Either way you should take the measurement to be on the safe side. Place the tape directly around your pants and around the largest part of the seat.
OUT SEAM: While wearing shoes, that will be similar to the shoes you will be wearing at the wedding, and standing up straight. Have your helper measure from the outside arch of your shoe, up your leg, past your hip bone, to the height of your navel. This measurement helps determine the length of the pants and also serves as a guide for coat length.
CHEST: Stand straight up and relax. With a light shirt on place the tape up under your arms, put your arms at your side, and run the tape over the shoulder blades, and around the chest. Insert a finger or two between the tape and the body to ensure proper ease.
OVER-ARM: The over-arm is measured with the coat off, around the body in the same manner and position where the chest was measured, but this time including both arms. The normal difference between these measurements and the chest is 8" unless you are muscular.
NECK: Place the tape low on the neck where the shirt collar normally falls. Run the tape completely around the neck. Allow a finger space between the neck and the tape.
SLEEVE: This measurement is for the shirt sleeve length which can also help to determine the coat length. With your arm straight down at your side, place the tape at the base of the neck in back. Run the tape across the top of the shoulder, and down the arm to a point about one inch below the wrist bone.
COAT IN-SLEEVE: Normally, the coat in-sleeve is predetermined by the coat size itself. So, this measurement doesn't need to be taken unless you think your coat will need to be altered (for example, if you have very long arms and have had problems with this measurement when buying a suit in the past). It is the distance between the cuff of the coat sleeve to the underarm following the inside seam of the sleeve. If you think you will need the sleeves altered from the standard lengths, make sure you mention it to the tuxedo shop.