Guidelines
(Best way to measure is by wearing an outfit of the same or similar material and then measuring the sizes)
WOMEN'S CLOTHINGS
Bust: If possible, get a friend to help. With arms relaxed at your sides, measure the fullest part of your bust, keeping the tape parallel to the floor.
Shoulder: Measure your shoulder from Left to Right of the beginning of the arm (as shown in the image below).
Sleeves: Measure your sleeves from the beginning of the arm to the write (refer to the image below)
Waist: Measure around your waist, in your underwear, at the point where your trousers would normally ride. Keep one finger between the tape and your body.
Hips: Stand with your heels together, and measure around the fullest part of your hips, keeping the tape parallel to the floor.
Rise: Hold the tape at the center back of your waist. Run the tape between your legs, pulling comfortably at the crotch, and up to your natural waist in front. The total measurement is your rise.
Inseam: Select a pair of your best-fitting pants of similar material. Measure from the crotch to the bottom. The number of inches, to the nearest half-inch, is the inseam length.
Height: Stand in stocking feet with your feet slightly apart and your back to a wall. Measure from the floor to the top of your head.