How to correctly measure for bra size
Step 1. Band Size
Measure around your ribcage, right under the bustline on your bare
skin. Don't pull the measuring tape too tightly.
Step 2. STOP DO NOT go beyond here unless you are looking for CUP SIZE Convert Band (For Cup Size Only)To determine your cup size you must convert this un-stretched band measurement into a bra band measurement using the conversion chart found below.
To determine your bra band size follow this chart.
(This chart and conversion process is only necessary
to determine cup size and is not necessary
to determine band size for a latex bra)
Step 3. Cup Size
For this measurement wear a supportive thin material bra.
Measure over the fullest part of the bust line.
To determine your cup size follow this chart using the difference between the band size and the overbust measurement.