Diagnose what is causing empty space at the top of your cups, confirm your measurements, and find the fastest route to a smooth, supportive fit.
Cup gaping happens when the volume of the cup is larger than the tissue it is meant to contain. Before changing sizes, confirm these clues to understand the root cause.
Lean forward when putting on your bra and gently scoop breast tissue into the cups. If the fabric still gaps after adjusting, move on to measurement checks.
Measurement accuracy is the fastest way to rule out sizing errors. Re-measure both band and bust, then enter them into the calculator to verify your base size.
Hormonal shifts, weight fluctuations, or cycle phases can temporarily change cup volume. Re-measure, then try the same cup letter with a smaller band if the band feels loose.
Re-measure nowOver-tightened straps pull cups upward and create gaps. Loosen straps, ensure the band is level, and re-test the fit before changing sizes.
Fix strap tensionFull-coverage cups can gape on shallow or teardrop breast shapes. Try demi or balconette styles that match your root width and projection.
Explore bralette & demi stylesOur upcoming sister size finder will instantly display alternate band/cup combinations that keep cup volume consistent. For now, remember: going down a band means going up a cup (34C ↔ 32D).
Tip: Always start on the loosest hook when trying a new band size. The bra should be level around your torso without relying on straps for support.
Lower coverage cups suit shallower shapes and reduce empty space at the top.
Inner slings and side panels guide tissue forward to fill the cup.
Shorter center gores reduce gaping for close-set or soft tissue breasts.
Stretch fabrics adapt to daily size fluctuations; ideal for relaxed days.
Cup gaping often shows up alongside other fit frustrations. Explore these resources to keep your fit on track as your body changes.
Still unsure? Our team is building a directory of certified fit specialists. In the meantime you can share questions or collaboration requests through our contact form.
Message the teamStart by checking measurements. If the band rides up, go down one band and up one cup (e.g., 36B → 34C). If the band is firm, try the same band with a smaller cup depth or a different style.
Yes—professional seamstresses can dart the cup edge or shorten straps. Tailoring works best when the band fits well but the cup is slightly roomy.
Fluctuations are common. Keep a flexible style (like a stretch cup or wireless bralette) on rotation and re-measure every few months or after major body changes.