Essential Wonderbra Bra Size Guide | UK & International Conversions
This Wonderbra Bra Size Guide covers UK band sizes 30–40 and cup sizes A–G. Wonderbra uses a UK band-and-cup sizing system, so once you know your UK size you can use the charts below as a clear starting point when choosing Wonderbra plunge, strapless and push-up styles. To find your starting size, measure your underband and bust and enter them into our Bra Size Calculator, then use the Bra Size Converter if you also shop other brands or international sizes.
For accurate results, follow the measuring steps in our Bra Fitting Advice page before using the Bra Size Calculator. Once you have a UK size, the Wonderbra availability chart below shows which band-and-cup combinations are most commonly produced across the range.
Wonderbra Bra Size Guide – UK Band & Cup Availability
Wonderbra bras are available in band sizes 30–40 and cups A–G. Availability varies by style; use this chart as a general guide.
| Band \ Cup | A | B | C | D | DD | E | F | FF | G |
|---|---|---|---|---|---|---|---|---|---|
| 30 | ❌ | ❌ | ❌ | ❌ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| 32 | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| 34 | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| 36 | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| 38 | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| 40 | ❌ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ❌ | ❌ | ❌ |
Wonderbra Bra Size Guide – UK to International Band Sizes
Wonderbra bras use UK underband sizing. Use the chart below to compare UK band sizes with common European systems. If you are converting a size from another region into a Wonderbra UK band size, our Bra Size Converter can help alongside this table.
| UK Band | EU | FR/ES | IT |
|---|---|---|---|
| 30 | 65 | 80 | 1 |
| 32 | 70 | 85 | 2 |
| 34 | 75 | 90 | 3 |
| 36 | 80 | 95 | 4 |
| 38 | 85 | 100 | 5 |
| 40 | 90 | 105 | 6 |
Wonderbra Bra Size Guide – UK to International Cup Sizes
Wonderbra bras follow a UK cup lettering system. This table shows how the main UK cup letters line up with equivalent labels in common European systems. Use it together with our Bra Size Converter when checking cup labels on international size charts.
| UK | EU | FR/ES | IT |
|---|---|---|---|
| A | A | A | A |
| B | B | B | B |
| C | C | C | C |
| D | D | D | D |
| DD | E | E | DD |
| E | F | F | E |
| F | F | F | F |
| FF | H | H | - |
| G | - | - | - |
Wonderbra Brief Size Guide – UK to International Brief Sizes
Wonderbra knickers generally follow the same sizing used in the Maidenform shapewear chart for dress size and hip measurements. Use this guide to match your usual UK dress size and hip measurement to the closest Wonderbra brief size.
| Wonderbra Brief Size | UK Dress Size | EU Size | Waist (inches) | Hip (inches) |
|---|---|---|---|---|
| S | 8–10 | 36–38 | 26–27 | 36.5–37.5 |
| M | 10–12 | 38–40 | 28–29.5 | 38.5–40 |
| L | 12–14 | 40–42 | 31–32.5 | 41.5–43 |
| XL | 14–16 | 42–44 | 34–34.5 | 44.5–46 |
Wonderbra Bra Buying Advice
- Wonderbra follows a UK band-and-cup sizing system in bands 30–40 and cups A–G. Begin by measuring your underband and bust, then enter your measurements into our Bra Size Calculator to confirm your UK starting size.
- Use the UK band and cup availability chart above to see where your size appears most often in the Wonderbra range. If you are comparing with another brand or shopping in a different sizing system, the Bra Size Converter can help you check the nearest equivalent.
- For step-by-step measuring guidance, strap checks and support checks, follow our Bra Fitting Advice. Once you have a reliable UK size from that guide, you can confidently use the Wonderbra band and cup conversion charts when looking at international labels.
- Different Wonderbra styles (such as multiway, strapless or plunge) may offer different levels of coverage and neckline shape. Use your confirmed UK size and the style description for each bra as a starting point when choosing which design to try.
Compare Wonderbra With Other UK Brands
Wonderbra uses the same UK band-and-cup sizing framework as many other lingerie brands. For consistent measuring, start with our Bra Fitting Advice, then enter your measurements into the Bra Size Calculator. Once you know your UK size, you can compare Wonderbra with:
- Gossard – UK-sized lingerie collections with fashion-led styling.
- Pour Moi – UK band-and-cup sizing across everyday, fashion and swim styles.
- Wacoal – UK-compatible sizing in a range of lingerie and contouring styles.
- Freya – UK-sized collections covering fashion, everyday and swim ranges.
For volume-matched comparisons between these brands and Wonderbra, use the Bra Size Converter alongside each brand’s dedicated size guide.
Wonderbra FAQs
Q: How do I find my Wonderbra bra size?
A: Measure your underband and bust and enter them into our
Bra Size Calculator.
For step-by-step measuring and fit checks, visit our
Bra Fitting Advice.
Then use the size charts above to match your measurements to Wonderbra sizes.
Q: Does Wonderbra sizing match other UK brands?
A: Wonderbra uses a UK band-and-cup sizing system.
To compare sizes between Wonderbra and other UK brands, use our
Bra Size Converter
and the individual brand size guides.
Q: Can I use this guide for Wonderbra swimwear?
A: Most Wonderbra swimwear follows the same UK sizing as their lingerie.
Always check product descriptions and use the charts above as a starting point.
Q: Where can I find official Wonderbra information and collections?
A: Visit the
Official Wonderbra Website
alongside our size charts,
Bra Fitting Advice
and
Bra Size Converter.