1 - Chest circumference:
in front the centimeter tape should pass through the outermost points of the chest, on the sides - under the armpits.
2 - Waist circumference::
is measured strictly horizontally along the natural waist line.
3 - Hips circumference:
centimeter tape should pass strictly horizontally through the outermost points of hips. Typically it is 18-23 cm (depending on height) below the waist line.