Measuring for Sports Bras and Tops

Chest :
Measure the total circumference around your the fullest part of your bust area.
Band :
Measure the total circumference around the underbust where the band would sit on your body.

Measuring for Leggings 

Waist :
Measure around your natural waistline, keeping the tape slightly loose.
Hips :
Measure around the fullest part of your body at the top of your leg.
Inseam :
Wearing pants that fit well, measure from the crotch seam to the bottom of the leg.