Chest: Take the measure of the basis of your neck, where the shirt neck lays.
Pecho:To take the measure, surround your body by the most prominent point between your chest and your back. Just below the armpit.
Shirt Length: Take the measure from the basis of your neck on the middle of your back to the shirt hem.
Sleeve Length: With the arm fully extended downward, take the measure from the highest point of your shoulder to the bottom of the wrist, where the hand begins.