Lift your arms up and wrap a flexible tape measure around the widest part of your chest, bust, and shoulder blades. Drop arms to your sides (over the tape) to take the measurement.
Shirtbox chest measurements are all the way around your body, not just across the front of your chest.
B: Body Length
Use a flexible tape to measure from the top of the shoulder down your body to the point where you want your garment to end.
OH NO! WHAT IF IT DOESN'T FIT?: