How to Measure Yourself for a Bra That Actually Fits
By KILO BRAVA: Attainable Luxury Lingerie & Sleepwear | Sizes | Published: 2026-10-16
Category: How-to Guides
Measure your band and bust at home in five steps, then check the numbers against real bra and bodysuit fits so you stop guessing between sizes.
Quick answer
Measure your band size by wrapping a soft tape snugly around your ribcage directly under your bust, then measure your bust at the fullest point. Subtract the band from the bust to get your cup size. If the band rides up or the underwire sits on breast tissue, remeasure before ordering.
What you need before you start
A soft, flexible measuring tape gives the most accurate reading; a piece of string and a ruler works if you mark the string and measure it flat. Wear an unlined bra or no bra at all. A padded bra adds inches that will throw off both numbers. Stand in front of a mirror so you can see whether the tape stays level around your back.
How to read your numbers
Once you have your band and bust measurements, subtract the band from the bust. A 1-inch difference is typically an A cup, 2 inches a B, 3 inches a C, and so on. This is a starting point, not a final verdict. Different brands cut their cups differently, and a style with structured cups will feel tighter than a soft lace piece in the same labeled size.
When to size up or down
If your band measurement lands on an odd number, round down for a snugger fit or up for more breathing room. If your bust measurement is between two cups, choose the smaller cup for a closer fit or the larger cup if you prefer less compression. Adjustable straps and back closures let you fine-tune the fit after the bra arrives.
How to check the fit once it arrives
Put the bra on the loosest hook first. The band should stay level and snug enough that you can fit two fingers under it, but not so tight that it leaves red marks. The center gore should rest flat against your sternum. If the underwire digs into breast tissue or floats away from your ribcage, the cup or band size is off.
Five steps to measure yourself at home
- Step 1: Measure your band size: 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. Common mistake: letting the tape dip at the back, which adds inches and gives you a band that is too loose. Checkpoint: the tape should feel snug but not tight enough to leave marks.
- Step 2: Measure your bust size: Wrap the tape around the fullest part of your bust, usually across the nipple line, without compressing the tissue. Keep the tape parallel to the floor. Common mistake: pulling the tape tight because you want a smaller number. That flattens the bust and skews your cup size. Checkpoint: the tape should rest lightly against your skin, not press into it.
- Step 3: Calculate your cup size: Subtract your band measurement from your bust measurement. The difference in inches gives you a starting cup size: 1 inch for A, 2 for B, 3 for C, 4 for D, and so on. Common mistake: treating this as exact. It is a starting point, and brands cut cups differently. Checkpoint: if you land between two cups, try the smaller cup for a closer fit and the larger cup for less compression.
- Step 4: Check the band on the loosest hook: Fasten the bra on the loosest hook first. The band should stay level and you should be able to slide two fingers underneath. Common mistake: starting on the tightest hook, which stretches the band out faster and hides a band that is actually too big. Checkpoint: if the band rides up your back, go down a band size.
- Step 5: Check the underwire and center gore: The underwire should sit flat against your ribcage and fully contain your breast tissue. The center gore should touch your sternum. Common mistake: ignoring wires that dig into the sides or float away from the chest, which usually means the cup is too small or the band is too large. Checkpoint: if the gore floats, try a larger cup before changing band size.
Real pieces to check your measurements against
- KILO BRAVA LACE COLLECTION- BLACK- UNDERWIRE BODYSUIT: Crafted from stretch eyelash lace and mesh with supportive underwire cups and adjustable straps, plus a thong back and retro high-leg silhouette. The underwire cups mean your band and bust measurements matter more here than in a soft bralette, and the adjustable straps let you correct a slightly loose band after ordering.
- KILO BRAVA EMBROIDERY COLLECTION- MULTI SPARKLE/CHAMPAGNE- SWEETHEART BUSTIER: Structured cups with underwire support, layered with champagne embroidery over sheer mesh, and adjustable straps with a back closure. Structured cups hold their shape, so if your bust measurement puts you between two sizes, this is a style where choosing the larger cup often feels more comfortable.
- KILO BRAVA BLACK BOW MESH - G-STRING: G-string silhouette in black bow mesh fabric with a cotton gusset, available in sizes S, L, XL, XXL, and XXXL. Bottoms are sized separately from tops, so measure your hips and waist too if you plan to build a matching set rather than relying on your bra size alone.
