Multiwear Breathable Backless Bra Betty Boob Black
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Betty Boob Black is a breathable black backless bra that goes all the way up to InvisiBra Size F. A breathing hole in the centre of each cup lets your skin breathe, and the sticky hold lifts you with no straps and no back band under backless, strapless, halter-neck and off-the-shoulder outfits.
Why you'll love Betty Boob
- Breathable cups. A breathing hole in the centre of each cup lets your skin breathe.
- Made for more sizes, from InvisiBra Size B up to InvisiBra Size F.
- Multi-wear. Works with backless, strapless, plunging, halter-neck and off-the-shoulder styles.
- Ultra-light. So comfortable you'll forget it's there.
- Invisible under any fabric, for a smooth, seamless look.
You'll also find this bra in our plunge backless bras, push-up backless bras and black backless bras collections.
Want an extra boost? Slip in our push-up bra inserts.
What to wear it with
Little black dresses, backless tops, summer events and weddings. Add our black seamless briefs or hipsters for no VPL, or the Flirt Frenchie black lace French knickers for something prettier. Want a clear strap? Go for the O.M.G. with clear straps. Prefer nude? Meet Betty Boob Nude.
Betty Boob or O.M.G.?
Both have the same cup shape. Betty Boob has one breathing hole in each cup. The O.M.G. Black has tiny holes all over the cups, so it's the one to pick if staying cool matters most.
Sizing
Comes in InvisiBra Size B, C, D, DD, E and F. InvisiBra sizes aren't the same as your usual bra size, so find yours in 30 seconds with our size guide. Between sizes? Go down one.
Usually wear a DD cup or bigger? Check the fuller-bust section of the size guide first. InvisiBra lifts best when your bust is firm.
Care
- Wash the cups after every wear in lukewarm water with a little mild soap.
- Hold them under running water and clean them gently with the palm of your hand, in a circular motion. Never use your fingernails or a brush: scratches permanently damage the adhesive.
- No alcohol, bleach or harsh cleaners, and don't machine wash it or leave it to soak.
- Shake off the excess water and leave it to air dry, sticky side up. Don't use a towel, paper or any kind of dryer.
- Once it's dry, cover the cups with a lid or keep it in a bra storage case, so dust and fibres don't weaken the adhesive.
What's in the box
1 x Betty Boob breathable backless bra in black.
Get it by
- Next day £12.68 · order by 12pm, Mon to Fri
- Next working day
- Tracked 24 £6.98
- 2–3 working days
- Tracked 48 £4.98, free over £40
- 3–5 working days
Dates count working days and skip bank holidays. We deliver to Europe and further afield too. You'll see the options and prices at checkout.
Arrived faulty? Email customerservice@invisibra.co.uk with photos as soon as you spot it and we'll sort it out. Our Returns policy has the details.
How to wear it
- Prep. Start with clean, dry skin: no moisturiser, oil or body spray where the cups sit.
- Stick. Flip a cup inside out and press it on with the clip pointing down. Smooth the edges, then do the other side.
- Clip. Angle both cups up and in, then clip them together. The more you angle, the more lift you get.
Afterwards, wash the cups in lukewarm water with a little mild soap, then let them air dry, sticky side up. That refreshes the adhesive for next time.
Every step, with tips for more lift or more cleavage: our how to wear guide.
Your questions, answered
Will it stay on all night?
Yes. Apply it to clean, dry skin and InvisiBra stays put all day and all night, through a full dance floor session or a humid summer wedding. It stays on until you decide to take it off.
Is it sweat-proof?
Yes! The adhesive is designed to handle sweat, body heat and movement, so you can wear it on holiday, at a festival or in a packed club.
Does it work for bigger boobs?
It can, if your bust is firm. Check the fuller-bust guide on our size guide to see whether InvisiBra will work for your size.
How many times can I wear it?
With proper care, 30+ wears. Clean the cups after every wear: lukewarm water, a little mild soap, and gently rub the sticky side with the palm of your hand. Then let them air dry. That refreshes the adhesive, so it stays sticky wear after wear.
Can I return it?
Bras sit right against your skin, so for hygiene reasons all sales are final. We can't take a bra back because it's the wrong size or you've changed your mind, so check our size guide or message us before you order. If anything arrives faulty, we'll sort it out.
Find your InvisiBra size
This style comes in InvisiBra Size B, C, D, DD, E and F.
Find your usual bra size: your band down the side, your cup along the top. The square where they meet is your InvisiBra size. Swipe the chart sideways for bigger cups.
| Your usual cup size | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Band | AA | A | B | C | D | DD | E | F | FF | G | GG |
| 26 | InvisiBra Size A | InvisiBra Size A | InvisiBra Size A | InvisiBra Size B | InvisiBra Size B | InvisiBra Size B/C, between sizes: go down one | InvisiBra Size C | InvisiBra Size C | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F |
| 28 | InvisiBra Size A | InvisiBra Size A | InvisiBra Size A | InvisiBra Size B | InvisiBra Size B | InvisiBra Size C | InvisiBra Size C | InvisiBra Size D | InvisiBra Size D/E, between sizes: go down one | InvisiBra Size E | InvisiBra Size F |
| 30 | InvisiBra Size A | InvisiBra Size A | InvisiBra Size A | InvisiBra Size B | InvisiBra Size B | InvisiBra Size C | InvisiBra Size C | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F | No recommendation, message us |
| 32 | InvisiBra Size A | InvisiBra Size A | InvisiBra Size B | InvisiBra Size B | InvisiBra Size C | InvisiBra Size C | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F, lifting styles only | InvisiBra Size F, lifting styles only | No recommendation, message us |
| 34 | InvisiBra Size A | InvisiBra Size A | InvisiBra Size B | InvisiBra Size C | InvisiBra Size D | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F, lifting styles only | InvisiBra Size F, lifting styles only | No recommendation, message us | No recommendation, message us |
| 36 | InvisiBra Size A | InvisiBra Size B | InvisiBra Size C | InvisiBra Size D | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F, lifting styles only | InvisiBra Size F, lifting styles only | No recommendation, message us | No recommendation, message us | No recommendation, message us |
| 38 | InvisiBra Size A | InvisiBra Size B | InvisiBra Size C | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F, lifting styles only | InvisiBra Size F, lifting styles only | No recommendation, message us | No recommendation, message us | No recommendation, message us | No recommendation, message us |
| 40 | InvisiBra Size B | InvisiBra Size C | InvisiBra Size D | InvisiBra Size E | InvisiBra Size F | InvisiBra Size F, lifting styles only | No recommendation, message us | No recommendation, message us | No recommendation, message us | No recommendation, message us | No recommendation, message us |
- – No size we'd recommend: message us
- Fuller bust: lifting styles only
- Two letters: you're between sizes, so go down one. Styles that come in Size DD: pick that for D/E.
Faded sizes aren't available in this style.
Between sizes or not sure? Go down one. InvisiBra works best snug or slightly small. Wearing something tight or low-cut? Stick to your size.
Don't know your bra size? Work it out with our 4-step calculator. Usually wear a DD cup or bigger? Read the fuller-bust guide first.