How to Measure Yourself for a Balcony Bra That Fits
By Marlies Dekkers Lingerie & Swimwear | Published: 2026-10-15
Category: How-to Guides
Learn how to measure for a balcony bra at home with a simple two-measurement method, plus checkpoints for cup fit, underwire placement, and band snugness.
Quick answer
Measure your band snugly around your ribcage directly under your bust, then measure your bust at the fullest point. Subtract the band measurement from the bust measurement: roughly 1 inch suggests an A cup, 2 inches a B, 3 inches a C, and so on. For a balcony bra, also check that the underwire sits flat against your ribcage and the top cup edge lies smooth against your skin, not floating away.
Why balcony bras need a slightly different measuring approach
Balcony bras are cut to lift from below and shape the upper bust, so the band and underwire do most of the supporting work. That means your band measurement matters as much as your cup size. If the band is too loose, the balcony cups tilt forward and the top edge gaps. If the band is too tight, the underwire digs in and the cups can wrinkle.
Unlike a plunge or full-cup style, a balcony bra often has a lower, more horizontal top edge. When you measure, think about where that edge will sit on your body: it should follow the natural curve of your upper breast without cutting in or standing away. Keep this in mind as you take your two measurements.
What you need before you start
Use a soft, flexible measuring tape. If you do not have one, a piece of non-stretchy string or ribbon plus a ruler works. Wear an unlined or lightly lined bra that is not padded, because padded cups add volume that skews your bust measurement. Stand in front of a mirror so you can keep the tape level.
For the most accurate reading, measure in inches and round to the nearest whole inch. If you are between sizes, note both numbers and use the fit checkpoints below to decide which way to go.
Step-by-step: measure for a balcony bra at home
- Step 1: Measure your band: Wrap the tape snugly around your ribcage, directly under your bust, keeping it level all the way around. Exhale normally and read the number where the tape meets. Round to the nearest whole inch. If the number is even, add 4 inches; if odd, add 5 inches to get your band size. Checkpoint: the tape should feel firm but not restrictive. If it leaves a deep mark, loosen it slightly and remeasure.
- Step 2: Measure your bust: Wrap the tape around the fullest part of your bust, usually across the nipple line, keeping it parallel to the floor. Do not pull tight; let the tape rest against your skin without compressing breast tissue. Round to the nearest whole inch. Common mistake: letting the tape dip at the back. Check in a mirror that the tape is level all the way around before you read the number.
- Step 3: Calculate your cup size: Subtract your band measurement (the raw number before adding 4 or 5) from your bust measurement. Each inch of difference equals one cup size: 1 inch = A, 2 = B, 3 = C, 4 = D, 5 = DD/E, and so on. Write down both your band and cup size. Checkpoint: if your result is a cup size you have never worn, recheck both measurements before assuming it is wrong.
- Step 4: Test the band on the loosest hook: Put on a balcony bra in your calculated size and fasten it on the loosest hook. The band should stay in place when you lift your arms and should not ride up your back. You should be able to slide two fingers under the band at the center back. If the band rides up, go down a band size and up a cup size. If it digs in, go up a band size and down a cup size.
- Step 5: Check the underwire and cup edge: The underwire should sit flat against your ribcage, not on top of breast tissue. The top edge of the balcony cup should lie smooth against your skin without cutting in or gaping away. The center gore between the cups should touch your chest. Common mistake: judging cup fit only by how the front looks. Turn to the side in the mirror and check that the wire follows your natural breast root.
- Step 6: Move around and reassess: Raise your arms, bend forward, and sit down. A well-fitting balcony bra stays put through all three. If the cups gap when you move, the band may be too loose or the cup too large. If you spill over the top, the cup is too small. Final checkpoint: if you are between sizes, choose the band that stays put and adjust the cup. The band does the supporting in a balcony bra.
Real balcony styles and what their fit details mean for measuring
- balcony bra: The Dame de Paris cappuccino brown balcony bra has a supportive balcony fit that creates a subtly rounded cleavage, with smooth chanterelle-brown microfiber overlaid with ton-sur-ton lace. A supportive balcony fit relies on a firm band, so if your band measurement lands between sizes, size down in the band for this style rather than up.
- plunge balcony bra: The Leading Strings plunge balcony bra is made in smooth black microfiber with recycled yarn and has plunge cups that create a subtle cleavage. Because the cups are cut lower at the center, your bust measurement at the fullest point is the number that matters most; a tape that slips down will understate your cup size.
- balcony bra: The Cypher black balcony bra has padded cups and underwires for support, with black lace made with recycled yarn over a sculpting sand-colored base. Padded cups add a little volume, so measure without a padded bra on. If you usually wear padded styles, add roughly half an inch to your bust measurement before calculating your cup size.
