If you want the garments you sew to fit properly, you must have the correct
pattern size, and that depends on your body measurements and your figure/build
type.
Measure your body. Accurate measurements are vital. Have
someone help you. Take the measurements over the undergarments you normally
wear. Update this information as you grow.
Find your figure type. Your figure type is based on body
proportions and height. Check the back of pattern catalogs to select the
type you are most like.
Select your size. Your measurements and figure type lead
you to your pattern size. Your ready-to-wear size is not necessarily the
exact same as your pattern size.
Females: Tie a string around your waist; where it settles is your natural waistline. (Young girls may have to bend sideways to find it.)
Bust: Measure around fullest part.
High bust: Measure around widest part of back, under the arms, and above fullest part of neckline.
Waist: Measure around natural waistline.
Hips: Measure around fullest part, about 7 inches from waist. A second measure could be 9 inches from waist.
Back waist length: Measure from prominent bone at back neck base down to natural waistline.
Height: Measure without shoes, against a wall.
Males: Tie a string around your waist; where it settles is your natural waistline. Neck: Measure around neck at base.
Chest: Measure around fullest part.
Waist: Measure around waist along string.
Hips: Measure around fullest part, about 6 inches below waist for boys, 7 inches for teenaged boys, and 8 inches for adult men.
Inseam: Measure inside leg to desired pants length.
Height: Measure without shoes, against wall.
Other measurements may be needed for males and females so they can alter certain pattern styles.