Wrap the tape loosely around the fullest part of your chest. Don’t pull it tight—just ensure it’s level all the way around.
The center piece between the cups should sit flat against your breastbone. If it’s hovering, the cups are likely too small. how to buy correct bra size
Wrap a measuring tape snugly around your ribcage, directly under your bust. Keep the tape level and parallel to the floor. Wrap the tape loosely around the fullest part of your chest
Subtract your calculated band size from this bust measurement . Each inch of difference represents a cup size: 1 inch = A 2 inches = B 3 inches = C 4 inches = D (and so on) 3. The "Fit Check" (The Most Important Part) If it’s hovering, the cups are likely too small
It should be level all the way around. If it arches up your back, the band is too big. You should be able to fit two fingers underneath it.
If the number is even, add 0. If it’s odd, add 1. (Example: 31" becomes a 32 band). 2. Measure Your Cup Size