Height:
measure the height of your body from top of your head to the end of your legs
Chest:
measure around the chest horizontally at the widest point
Waist:
measure around the narrowest part of your waist
Hips:
measure around the widest point
Side seam:
measure from the waist to just below the anklebone
Arm:
measure from the base of your neck to the end of your sleeve from the upper side of your arm
Thigh:
measure around it at the widest point
Inside leg length:
measure from the top of the inside leg to just below the ankle
Biceps:
measure around one at the widest point