By Jenisha Jonchhe Researched and tested where possible Updated
Affiliate links: this guide links to Amazon UK. As an Amazon Associate, My Bra Size earns from qualifying purchases. It never changes the advice or the size we suggest.
A backless bra is a bra designed to stay hidden under an open back. There are three main types: low-back bras whose band dips into a U and fastens at the waist, adhesive bras with no band at all, and shapers with built-in cups. Which one works depends on how low your back is cut and how much support you need.
The three types
Low-back (U-plunge) bras. Underwired or moulded cups with a band that drops into a deep U at the back and wraps round your waist. They keep wires and real support, so they suit fuller busts.
Adhesive backless bras. Silicone or fabric cups that stick to your skin and often clip together at the centre. Nothing shows at the back, but they hold best on smaller to mid cups. See our stick-on bra guide.
Backless shapers. Slips or bodysuits with cups and a low-cut back, made for fitted dresses where you also want smoothing.
For a step-by-step choice based on your dress, read the bra for a backless dress guide.
Good, affordable picks on Amazon UK
We chose these for strong reviews from many Amazon UK shoppers and a price below most similar listings when we checked in October 2026. We have not tested them ourselves. Check your size, today’s price and the returns policy before you buy.
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Well reviewed · Good value
DotVol Deep U Plunge Bra Backless Push Up Low Cut
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Well reviewed · Good value
Niwicee Low Back Bra Backless Bra
How low is the back?
- Mid back: a low-back bra or a converter strap on your own bra.
- Lower back or waist: a U-plunge low-back bra or a shaper.
- Fully open to the waist: adhesive cups or boob tape.
Sizing a backless bra
Low-back bras use your usual UK band and cup size; if you need one, our bra size calculator gives a starting point. The waist band should feel firm but not tight. Adhesive styles are sized by cup letter, so check the maker’s chart and go up if you are between sizes.
More to search for on Amazon UK
Add your UK size to the search on Amazon (for example “34G”). Not sure of it? Use our bra size calculator first.
- 1
U-plunge low-back bra
Underwired cups with a band that drops into a deep U and fastens at the waist, for real support under open backs.
- 2
Adhesive backless push-up bra
No band or straps: cups stick on and clip at the front for lift under fully open backs.
- 3
Backless body shaper with built-in cups
A shaping slip with cups and a low back, for fitted dresses that show every line.
As an Amazon Associate, My Bra Size earns from qualifying purchases. Links open Amazon UK; prices and stock are set by Amazon and its sellers. Search results change often, so a product appearing there has not necessarily been tested. Product photos, where shown, come from Amazon. How we handle affiliate links
Tips for keeping it hidden
- Try the bra with the dress in front of a mirror, checking both sides.
- Raise your arms and sit down: low bands can creep up.
- Choose a shade close to your skin tone for light fabrics.
- For adhesive cups, apply to clean skin with no lotion.
Questions people ask
Do backless bras give support?
What size backless bra should I get?
What is the difference between a backless and a strapless bra?
Written by
Jenisha Jonchhe
Jenisha Jonchhe is a New York-based fashion writer and designer with academic training in fashion design. She writes research-led bra sizing and fit guides for UK shoppers.
Researched from brand and retailer size guides, and tested hands-on where possible. Search results on Amazon change often, so a product appearing there has not necessarily been tested. How we research and test
