Nude U-Plunge Breathable Backless Bra Knock Out
- Economy - 3 to 5 working days
- Express - 2 to 3 working days
- Guaranteed Next-Day Service - we use Royal Mail’s next-day delivery, available for orders received before noon every day from Monday to Friday.
If the bra you received is not the correct cup size, you can return it for an exchange as long as the protective film remains intact. Before proceeding, please contact us via email at customerservice@invisibra.co.uk.
Please note that you are responsible for the postage costs for both the return and the exchange.
SIZE GUIDE
The best shape and support is achieved by a cup that covers about 75% of your breast area. If cups are too big for you, they will swamp your breast area and you’ll end up with pancakes instead of lifted rounded breasts!
There are 2 ways to find the right InvisiBra size for you. The quick route is to convert your UK bra size into InvisiBra size. The more accurate route is to measure yourself according to our measuring guide. Because InvisiBra is a backless bra, our sizes come in cup sizes only (A, B, C, D), without the band size (30, 32, 34) element.
Invisibra Size Conversion Chart
| Invisibra Size | AU / NZ | US | UK | EU / CN / JP / HK / KR | FR / ES / BE |
|---|---|---|---|---|---|
| A | 6AA | 28AA | 28AA | 60A | 75A |
| A | 6A | 28A | 28A | 60A | 75A |
| A | 6B | 28B | 28B | 60B | 75B |
| B | 6C | 28C | 28C | 60C | 75C |
| B | 6D | 28D | 28D | 60D | 75D |
| C | 6DD | 28DD | 28DD | 60E | 75E |
| C | 6E | 28DDD | 28E | 60F | 75F |
| D | 6F | 28F | 28F | 60G | 75G |
| E | 6G | 28G | 28G | 60H | 75H |
| F | — | — | 28GG | — | — |
| A | 8AA | 30AA | 30AA | 65A | 80A |
| A | 8A | 30A | 30A | 65A | 80A |
| A | 8B | 30B | 30B | 65B | 80B |
| B | 8C | 30C | 30C | 65C | 80C |
| B | 8D | 30D | 30D | 65D | 80D |
| C | 8DD | 30DD | 30DD | 65E | 80E |
| C | 8E | 30DDD | 30E | 65F | 80F |
| D | 8F | 30F | 30F | 65G | 80G |
| E | 8FF | 30H | 30FF | 65H | 80H |
| F | 8G | 30G | 30G | 65G | 80H |
| A | 10AA | 32AA | 32AA | 70A | 85A |
| A | 10A | 32A | 32A | 70A | 85A |
| B | 10B | 32B | 32B | 70B | 85B |
| B | 10C | 32C | 32C | 70C | 85C |
| C | 10D | 32D | 32D | 70D | 85D |
| C | 10DD | 32DD | 32DD | 70E | 85E |
| D | 10E | 32DDD | 32E | 70F | 85F |
| E | 10F | 32F | 32F | 70G | 85G |
| F | 10FF | 32H | 32FF | 70H | 85H |
| F | 10G | 32G | 32G | 70H | 85H |
| A | 12AA | 34AA | 34AA | 75A | 90A |
| A | 12A | 34A | 34A | 75A | 90A |
| B | 12B | 34B | 34B | 75B | 90B |
| C | 12C | 34C | 34C | 75C | 90C |
| D | 12D | 34D | 34D | 75D | 90D |
| D | 12DD | 34DD | 34DD | 75E | 90E |
| E | 12E | 34DDD | 34E | 75F | 90F |
| F | 12F | 34F | 34F | 75G | 90G |
| F | 12FF | 34H | 34FF | 75H | 90H |
| A | 14AA | 36AA | 36AA | 80A | 95A |
| B | 14A | 36A | 36A | 80A | 95A |
| C | 14B | 36B | 36B | 80B | 95B |
| D | 14C | 36C | 36C | 80C | 95C |
| E | 14D | 36D | 36D | 80D | 95D |
| E | 14DD | 36DD | 36DD | 80E | 95E |
| F | 14E | 36DDD | 36E | 80F | 95F |
| F | 14F | 36F | 36F | 80G | 95G |
| A | 16AA | 38AA | 38AA | 85A | 100A |
| B | 16A | 38A | 38A | 85A | 100A |
| C | 16B | 38B | 38B | 85B | 100B |
| D | 16C | 38C | 38C | 85C | 100C |
| E | 16D | 38D | 38D | 85D | 100D |
| F | 16DD | 38DD | 38DD | 85E | 100E |
| F | 16E | 38DDD | 38E | 85F | 100F |
| B | 18AA | 40AA | 40AA | 90AA | 105AA |
| C | 18A | 40A | 40A | 90A | 105A |
| D | 18B | 40B | 40B | 90B | 105B |
| E | 18C | 40C | 40C | 90C | 105C |
| F | 18D | 40D | 40D | 90D | 105D |
| F | 18DD | 40DD | 40DD | 90E | 105E |
FIND OUT YOUR BRA SIZE
Deep Plunge Perfection 💫
Introducing Knock Out - the nude U-plunge breathable backless bra with sticky cups for secure lift! Perfect for deep V-necklines and plunging dresses, this bra enhances your breast contours while staying completely invisible.
✨ Why It's Perfect
- Deep U-Plunge Design: Perfect for ultra-low necklines and plunging styles
- Breathable Comfort: Perforated cups keep you cool all day
- Sticky Cups: Secure adhesive provides lift and support
- Enhances Contours: Creates beautiful, natural shape
- Invisible Under Daring Outfits: Nude color disappears completely
💃 Perfect For
Deep V-necklines • Plunging dresses • Backless styles • Special occasions • Date nights • Daring outfits
🎯 Pro Tip
This is THE bra for those super-low necklines! Pair with our nude seamless briefs for a complete invisible foundation.
🌸 Care Instructions
Hand wash in lukewarm water after each wear and air dry to maintain adhesive quality. Store in a dark and dustfree environment away from the sun.
📦 What's Included
1 x Knock Out U-Plunge Backless Bra
Ready to rock that plunging neckline? Add to cart now! 💫
Size guide
Sizes
| Row | Length |
|---|---|
| S | 10cm |
| M | 20cm |
| L | 30cm |
Sizes
| Row | Length |
|---|---|
| S | 10cm |
| M | 20cm |
| L | 30cm |
Bra arrived quickly. I have tried it on following the instructions and works perfectly. I have not used the bra (past trying it on) yet but certainly feels like it will stay put for a very long time.
The bras never budge meaning you can feel extremely confident when wearing. Have worn for long periods of time and always the same result.
