Your breasts should fill the cups without "quad-boobing" (spilling over the top) or gaping (extra space at the top).
They should stay put without digging in. Remember: the band provides 80% of the support, not the straps. Pro Tip: The "Swoop and Scoop" how to buy correct bra size
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) Your breasts should fill the cups without "quad-boobing"
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. Pro Tip: The "Swoop and Scoop" Subtract your
Numbers are just a starting point; the mirror tells the truth. Look for these signs of a good fit:
The center piece between the cups should sit flat against your breastbone. If it’s hovering, the cups are likely too small.