Bra size does not mean the same thing across every brand. With us, the differences are measurable: some brands finish their sizing at an E cup, others go up to an I, Julimex sells self-adhesive models marked only by cup size, and Key sells youth bras in AA/BB/CC. That's why the calculator has brand selection and calculates what that brand actually offers.
Size Calculator
How Zeprado's brand sizings differ
The table shows the real state of our catalog – the sizes that these brands have in bras, calculated from product variations, not from general guides. We have bras from 13 brands, and each of them has a different set of sizes.
| Brand | Labeling | Circumferences | Cups | S–XL Models | Products |
|---|---|---|---|---|---|
| Selene | band + cup | 70–105 | B–G | 2XL, L, M, S, XL | 163 |
| Kleo | band + cup | 65–95 | A–H | 2XL, L, M, S, XL | 47 |
| Gaia | band + cup | 65–80 | B–I | — | 7 |
| Kinga | band + cup | 65–80 | B–I | — | 7 |
| Sielei | band + cup | 70–105 | B–E | 2XL, L, M, S, XL | 70 |
| Lormar | band + cup | 65–95 | B–E | 2XL, L, M, S, XL, XS, XXL | 77 |
| Verde Veronica | band + cup | 75–95 | B–E | — | 16 |
| Infiore | band + cup | 70–95 | B–D | — | 20 |
| Spiman | band + cup | 70–80 | B–D | — | 5 |
| Naviale | band + cup | 70–80 | B–D | L, M, S, XL | 10 |
| Conte | band + cup | 75–80 | A–E | — | 2 |
| Key | youth AA/BB/CC | 65–85 | AA–CC | 2XL, L, M, XL, XXL | 27 |
| Julimex | cup only (self-adhesive models) | — | A–D | 2XL, L, M, S, XL | 33 |
The "S–XL Models" column refers to soft bras, bralettes, and tops from that brand, which are labeled by letter instead of band and cup size.
Julimex: self-adhesive bras
These are the only models in our store for which the manufacturer provides its own conversion: the size of a self-adhesive bra is just the cup size, and one cup size covers several EU sizes. Three rows come directly from the manufacturer's description, two are calculated from the same series and described as such.
| Cup | Corresponds to sizes | Row source |
|---|---|---|
| A | 65B, 70A | from manufacturer's description |
| B | 65C, 70B, 75A | calculated from the same series |
| C | 65D, 70C, 75B, 80A | calculated from the same series |
| D | 65E, 70D, 75C, 80B | from manufacturer's description |
| E | 65F, 70E, 75D, 80C | from manufacturer's description |
Julimex Jelly Bra: sizes S, M, L, XL
For soft Jelly Bra models, the manufacturer specifies which band and cup sizes each letter corresponds to. These are also manufacturer's data, not our conversion - and they clearly show why "S" in one model does not mean the same as "S" in another.
| Model | Size | Corresponds to |
|---|---|---|
| Jelly Bra Basic | S | 70 A–C |
| Jelly Bra Basic | M | 75 B–D |
| Jelly Bra Basic | L | 80 B–D |
| Jelly Bra Basic | XL | 85 B–D |
| Jelly Bra Comfort | S | 70 B–D |
| Jelly Bra Comfort | M | 75 C–E |
| Jelly Bra Comfort | L | 80 C–E |
| Jelly Bra Comfort | XL | 85 C–E |
It shows that the same letters mean different things: a 75B measurement fits in Jelly Bra Basic in size M, but doesn't fit in any Jelly Bra Comfort size - Comfort only starts cups from C. The calculator automatically adds this row to the result if your measurement falls into one of the tables.
Key: youth bras
Key bras from the TBC and TBM lines are models for teenagers and are marked with a double letter: 65AA, 65BB, 70AA, 70BB, 75AA, 75BB, 75CC, 80AA, 80BB, 80CC, 85CC. An AA cup is shallower than an A, BB shallower than a B. The manufacturer does not provide circumferences in centimeters for them, so the calculator does not convert this line to centimeters — it indicates the band size (number) and directs to Key bras, where all available sizes can be seen.
How to measure yourself
- Underbust circumference — tape measure held horizontally and snugly just below the bust, taken on a gentle exhale. This result gives the band size: 63–67 cm is 65, 68–72 is 70, 73–77 is 75, 78–82 is 80, 83–87 is 85, 88–92 is 90, 93–97 is 95, 98–102 is 100.
- Bust circumference — at the fullest part, tape measure held loosely, ideally while wearing a non-padded bra. For soft breasts, also measure while leaning slightly forward and take the larger result.
- The difference between the two measurements determines the cup size: 12 cm is A, 14 cm is B, 16 cm is C, 18 cm is D, 20 cm is E, 22 cm is F, 24 cm is G, 26 cm is H.
Example: 75 cm underbust and 91 cm bust results in a 16 cm difference, which is 75C. Repeat each measurement twice.
Sister sizes
A sister size has a different band and cup size but a similar cup volume. If 80C is too loose in the band, try 75D. If it's too tight, try 85B. The calculator provides both and checks which ones the selected brand actually has.
Where these numbers come from
- The band and cup conversion is the same convention we use in the tables next to products and in offer descriptions. We checked this directly: the calculator reproduces all 61 rows of the size chart linked to the products.
- Brand sizings are calculated from active product variations in the store – this represents the catalog's actual state, not a general guide.
- Among our suppliers, only Julimex provides its own size conversions (self-adhesive and Jelly Bra models). Other brands do not include size charts, so for them, the calculator uses the general convention and clearly marks this in the result.
- The note about Selene is not an opinion: in returns from our orders (14.05-12.09.2026, 125 returned items), the reason "too large" appeared 39 times, and "too small" 23 times.
Full size chart · Bras by size · Frequently Asked Questions · Return an order if the size doesn't fit.