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Backless Noemi Balconet Bridal Bra 6377
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Bridal Strapless Bra 6377 in Ivory, White or Black 6377
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Mystique Seamless Minimizer Bra 7000
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Longline Smooth Strapless Bridal Corset Bra 8541
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Juliette Satin Bridal Corset Bra 8950
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Domique Mytique Minimizer Bra 7000
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Longline Strapless Bridal Bra 8541
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Juliette Satin Corset Bridal Bra 8950
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Aimee EveryDay Contour Bra 3500
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Lacee Everyday Contour T-Shirt Bra 3501
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Juliette Satin Corset Bridal Bra 8950
$79.00Unit price /Unavailable-
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Satin Corset Bridal Bra Low Back Push Up Strapless Plus Size Bra 8950
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Satin Corset Bridal Bra Low Back Wedding Bustier Plus Size 8950
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Longline Strapless Bridal Bra 8541 in Black 8541
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Strapless Low Back Noemi Balconet Bridal Wedding Bra 6377 Plus Size 6377
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Lace Corset Bridal Bra, Colette Torsolette in Black 8949
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Juliette Satin Corset Low Back Push Up Strapless Bridal Bra 8950
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Bra Women Seamless Push-up Padded underwire t shirt Bra 3500
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Backless Strapless Push Up Bridal Corset Wedding Bra Plus Size 6377
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Noemi Strapless Balconet Bra 6377
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Balconet Corset Strapless Bridal Bra Bra 6377
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Bridal Strapless Bra Women's Push Up Underwire Wedding Bra 6377
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T-Shirt Bra Underwire Seamless Full Coverage Bra Plus Size 3500
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Colette Lace Satin Corset Bridal Bra Low Back Wedding Bustier Plus 8949
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Longline Strapless Push Up Bridal Corset Bra 8541 in Black 8541
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Full Coverage Contour T-Shirt Bra Plus Size Underwire ComFort Bra 3501
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Longline Strapless Push Up Wedding Bridal Bra Plus Size 8541
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Women's Minimizer Bra Mystique full coverage Plus Size bra 7000
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42A Bras: A Standard A Cup — the Same in US, UK and EU
A 42A is a straightforward size to shop across borders. The band is a 42 in every system, and a A cup is written A in US, UK and EU sizing alike — the systems don't diverge until well above the D range.
Below: exactly what 42A converts to across US, UK and EU, where the systems agree, how to measure to be sure, your sister sizes, and the styles that suit a A cup.
What is a 42A bra size?
A 42A bra has a 42-inch underband and a A cup — and a A is written the same across systems. A UK 42A, US 42A and EU 95A all describe the same size: a bust roughly 1 inch larger than the band (around 43 inches around the fullest point). A, B and C sit well inside the range where US and UK sizing agree — they don't split until DDD/E — so it's an easy size to buy internationally. Sister sizes, holding the same cup volume, are 40B and 44AA. Shop 42A bras in t-shirt, plunge, balconette, bralette, strapless and sports styles.
How to choose a bra at 42A
A A cup is well-served by most standard bras — but these five checks still decide whether it fits cleanly or shifts through the day.
| What to check | What good looks like | Why it matters |
|---|---|---|
| Band fit | Level all the way around, snug on the loosest hook, two fingers under it and no more | The band carries most of the support at any cup — a band that rides up shifts the load onto your shoulders |
| Cup shape | Moulded for a smooth line, or a bralette for softness — both work well at a A | A A is served by almost every construction; pick by the shape you want under clothes, not by necessity |
| Underwire | Wires that sit flat on the ribcage and encircle the breast without poking the underarm — or skip the wire entirely | A A is light enough that wire-free styles hold their shape, so comfort is a free choice here |
| Straps | Adjustable, comfortable, staying put without being cranked tight | At a A, standard straps are plenty; if they dig, the band is likely too loose |
| Gore & wings | Centre gore flat to the breastbone; wings smooth against the side | A floating gore means the cup is too small; smooth wings stop any side spillage |
42A in US, UK, EU and beyond
The same body, seven labels — and at a A cup the letter doesn't move. The band number changes system to system; the cup stays A.
| System | Size | How it's written |
|---|---|---|
| UK | 42A | The size on this page — the same letter everywhere |
| US | 42A | US and UK both write a 1-inch cup as A |
| EU | 95A | Band in centimetres; US 42 = EU 95. Cup still A |
| France / Spain | 110A | EU band plus 15 — same A cup, bigger number |
| Italy | 6A | Italy numbers bands; EU 95 = Italian 6 |
| Australia / NZ | 20A | Numeric band (US 42 = AU 20), same A cup |
| Japan | 95A | EU band; Japanese cups run small, so size up one cup |
So is a US A the same as a UK A? Yes — at a A cup they're identical, both meaning a bust about 1 inch larger than the band. The systems only split much higher up: a UK DD is still a US DD, but a UK E is a US DDD, and a UK F is a US G. A A is nowhere near that split. See our full bra size conversion guide.
Find your 42A bra
Pick the card that matches what you need it for — then tap through to shop.
Everyday, under everything
A moulded t-shirt bra: smooth under knit, rounded shape, no seam showing through.
Shop t-shirt bras →Shape and lift
A plunge or balconette adds shape and opens the neckline — the going-out pick at this cup.
Shop all bras →Running, lifting, moving
A A is well covered by compression or lightly encapsulated sports bras. Pick by impact level.
Shop sports bras →Strapless that stays
A A is very wearable strapless — look for a firm band and silicone grip and it holds.
Shop strapless →Soft and wire-free
At a A, a bralette holds its shape — the easy comfortable option for low-key days.
Shop bralettes →Not sure it's your size?
If your current 42A gapes or the gore floats, the conversion or your measurements may be off. Start here.
Convert my size →The band does the lifting; the straps only steady it. A A cup is easy to fit well once the band is right — the gaping, the ride-up and the digging usually trace back to the band, not the cup.
The HauteFlair StandardThe complete 42A sizing guide
Measuring, where the systems agree, sister sizes, the fit tells and the vocabulary.
01How to measure for a 42A at home+
Two measurements, taken in a soft unpadded bra or none at all, tape level:
- Band: snug around the ribcage directly under the bust. A 42 band comes from an underbust near 41–43 inches.
- Bust: around the fullest point, tape parallel to the floor, not pulled tight. At 42A that lands around 43 inches.
- Cup: subtract band from bust. A 1-inch difference is a A; AA and B are a cup either side.
The result is a starting size, not a verdict. Cut varies mill to mill, so let the fit checks below decide — and if you're on the line between letters, try the size plus its sister sizes.
02Where US and UK sizing agree — and where they split+
A A is safely inside the zone where both systems match. Here's the ladder:
- They agree through DD: A, B, C, D, DD read the same in US and UK. A 42A is a 42A in both.
- They split at DDD: above DD the US stacks another D (DDD) while the UK moves to E — so a UK E is a US DDD.
- From there they diverge: UK F is a US G, UK FF is a US H, and so on up the alphabet.
So a A cup is one you never have to convert. It's only above the D range that you need to check whether a chart is UK or US before trusting the letter.
03Sister sizes: 40B, 42A, 44AA+
Cup volume moves with the band, so 42A has neighbours holding roughly the same cup:
- Down a band, up a cup: 40B — for a firmer band that feels tighter.
- Up a band, down a cup: 44AA — for a looser band with the same cup room.
Reach for a sister size when the cup fits but the band doesn't, or when your exact size is out of stock in a style you want. What you should never do is loosen the band to fix the cup — that hands the support to your shoulders. The full logic is in our sister sizes guide.
04The five fit tells at a A cup+
Stand at a mirror. In order of usefulness:
- Band riding up at the back — band too loose. Go down a band, up a cup (your sister size).
- Gore floating off the breastbone — cup too small, or the wire is too narrow for you.
- Spillage at the top, underarm or under the wire — cup too small. Not a shape problem.
- Wrinkling or gaping at the top of the cup — cup too big, or the wrong style for your shape.
- Straps digging — you've tightened them to cover for a loose band. Fix the band first.
Check on the loosest hook when the bra is new; you move to the tighter hooks as the elastic relaxes over time.
0542A, A cup, 95A: the vocabulary+
- 42A — a 42 band with a A cup; the same in US and UK sizing.
- EU 95A — the same body; 95 is the band in centimetres, and the cup is still A.
- Standard cup — A, B and C are the everyday cups, stocked across nearly every style and brand.
- Sister size — a different band-and-cup pairing holding the same cup volume; 42A's are 40B and 44AA.
- The split — above DD, US and UK letters diverge (UK E = US DDD). A A is well below it.
42A bras FAQ
The questions shoppers ask most, answered straight.
What is a 42A bra size?
A 42A has a 42-inch underband and a A cup. In US, UK and EU sizing a A cup is written the same way — it's a bust about 1 inch larger than the band (around 43 inches around the fullest point), which makes 42A a US 42A, a UK 42A and an EU 95A. It's a standard, widely stocked cup, well inside the range where the sizing systems agree.
Is 42A a big or small bra size?
A A is one of the standard everyday cups, on the smaller-to-middle side of the range, but the letter alone doesn't settle it. Cup volume is measured against the band, so a 42A holds more than a 40A (smaller band) and less than a 44A (larger band) even though all three read A. The band is half the size.
Is 42A a UK or US size?
Either — at a A cup it's the same. US and UK sizing agree all the way up to DD, and a A is well below that, so a UK 42A and a US 42A are identical. The two systems only split much higher up: a UK E is a US DDD, and a UK F is a US G.
What is a 42A in US sizing?
Also 42A. A 1-inch difference between bust and band is a A cup in both US and UK sizing, so the letter doesn't change. Only the larger UK cups (FF, GG) get rewritten in US letters — a A stays a A.
What is a 42A in EU sizing?
A 42A is an EU 95A. The band converts from inches to centimetres (42 inches = EU 95), but the cup letter stays A — A, B and C land on the same letter in US, UK and EU sizing. In France or Spain the same size reads 110A.
Is a 42A bigger than a 42AA?
Yes, by one cup. On the same 42 band, each step up the alphabet adds cup volume, so a 42A is one cup larger than a 42AA and one cup smaller than a 42B. If a AA gapes at the top or a B spills over, A is the size in between.
What's the difference between 42A and 42B?
One cup. A B holds about an inch more projection than a A on the same band. If your 42A cup cuts in, spills over the top or the underarm, the next size up is 42B — not a bigger band.
What are the sister sizes for 42A?
40B and 44AA — the same cup volume on a different band. Drop to 40B for a firmer band, move up to 44AA for a looser one. Use a sister size when the cup fits but the band doesn't, or when your size is sold out in the style you want.
How do I measure for a 42A at home?
Measure snugly around your ribcage under the bust for the band, then around the fullest point with the tape level. Subtract the first from the second: a 1-inch difference on a 42 band points to a A cup. Treat it as a starting size and let the fit checks decide.
What bra styles work best for a 42A?
Most styles — a A is a well-served cup, so t-shirt, plunge, balconette, bralette, strapless and sports styles all come in it. A moulded t-shirt bra works smoothly under knits, a plunge or balconette shapes and lifts, and a wire-free bralette is an easy comfortable option at this cup.
Sizing guidance here is general. Bra sizing is not standardised — cup labelling, wire shape and band firmness vary by brand and style, so conversions are a starting point, not a guarantee. Always check the individual brand's size chart and treat any measurement as a place to begin. Size availability reflects current stock. Last reviewed August 2026.
Shop 42A bras
A A cup that reads the same in US, UK and EU — in t-shirt, plunge, balconette, bralette, strapless and sports styles, with bands that fit and cups that hold their shape.
