Find Your Perfect Fit
We design for comfort, support, and simplicity.
Whether you know your bra size or just your usual top size, finding your your perfect UnaBra fit is simple. Designed for all-day comfort, UnaBra offers the ideal balance of support and softness. Take a moment to find the size that feels just right.
Measure for the Best Fit
For the best experience with UnaBra, we recommend measuring under your bust with a soft tape measure. Refer to the calculator below to match your measurement with our sizing system.
Tip: This method is especially helpful if you’re between sizes or new to UnaBra.
For UnaBra (Main Collection)
Use your underbust measurement to find your size. Our bras are designed to support cup sizes A to D only at this stage.
Bra Size Recommender
Quick Size Estimator
Don’t have a tape measure? No worries.
Simply choose your usual top size (e.g. AU 10) and get a suggested bra size.
Note: This is just a general guide. For a truly comfortable fit, we recommend taking the time to measure if possible.
If you’re between sizes or prefer a more relaxed feel, we recommend going for the roomier fit.
AU Size Reference Chart
| AU Size | Underbust (cm) | Recommended Fit |
|---|---|---|
| AU 6 | ≤71cm | Slim |
| AU 8 | ≤76cm | Slim |
| AU 10 | ≤81cm | Fit |
| AU 12 | ≤86cm | Fit |
| AU 14 | ≤91cm | Fit |
| AU 16 | ≤96cm | FullFit |
| AU 18 | ≤101cm | FullFit |
| AU 20 | ≤106cm | FullFit |
Note: This chart applies to A-D cup sizes only. E/F cups are not currently available in our collection.
For TweenFit Series
TweenFit uses overbust measurements, while other collections use underbust. Sizes are based on average figures. For smaller busts with minimal support needs, TweenFit is suitable. For B cup or above, Cloudy Apple or UniFit offers better support.
TweenFit Size Recommender
FullFit Size
We’re working on extending our size range to serve more body types. Currently, our FullFit sizes are not available for purchase or pre-order due to sourcing limitations.
We appreciate your patience and interest—please stay tuned as we continue growing with inclusivity in mind.
Still not sure?
Feel free to reach out via contact@unabra.com, we’re happy to help you find your best fit.