How tight should a bra band be?

Snug and level, fastened on the loosest hook when new, with room for two fingers underneath but not more. It shouldn't move when you lift your arms. As the elastic relaxes over months of wear, move to the tighter hooks.

Why do my bra straps dig into my shoulders?

Almost always because the band is too loose and the straps are carrying weight the band should hold. Go down a band size and up a cup rather than loosening the straps.

Why does the middle of my bra not touch my chest?

A floating gore means the cups are too small: the breasts are pushing the frame away from the sternum. Go up a cup size on the same band. If it still floats with cups that fit, you may be wide-set: try a plunge or wide-gore style.

Why do my cups gape at the top?

Either the cup is too large or the shape doesn't match yours: many people are fuller at the bottom and gape in cups cut full on top. Try a cup size down first, then a different style such as a balconette or plunge.

How do I know if my cup is too small?

Spillage over the top or sides, a gore that floats, or underwire sitting on breast tissue rather than the ribcage. Any one of these means go up a cup.

Should a new bra be fastened on the tightest hook?

No: on the loosest. The tighter hooks are for later, when the elastic has stretched. If a new bra only fits on the tightest hook, the band is already too big.

What is the scoop and swoop?

After fastening, lean forward and use the opposite hand to draw the breast tissue from under the arm forward and up into the cup. It seats the wire in the crease and removes most side-spillage. Do it every time you put a bra on.

Buying guide · F cup and beyond

The Best Bras for Large Busts

Past an F cup, the market splits into ranges that grade upward from a mainstream block and ranges engineered for depth from the first stitch. The second kind is where good fit lives, and the UK houses dominate it for a structural reason: their letter ladder was built to grade these volumes honestly.

What actually matters

Choosing by construction

Seamed cups, wide firm bands, cushioned straps and side-support panels are not premium extras at this depth; they are the load-bearing structure.

Prefer brands that carry your size well inside their chart. Our size guides badge exactly that, because a size at a range edge is cut from a block graded for the middle.

US letters become ambiguous past DDD; one brand's F is another's DDD or G. Every conversion on this site is by chart position, and the interactive brand charts show each label.

From our brand dossiers

Brands to look at

Brand	Why they are on this list	Charted size span
Panache	D through K on 28 to 46; deep-cup engineering is the entire brand	28–46, D–K (UK) · chart
Elomi	Full-figure full-bust: bands to 48 with deep letters	34–48, DD–K (UK) · chart
Bravissimo	Full-bust retailer-brand with fit-first philosophy we document, including their anti-chart fitting stance	28–40, D–K (UK) · chart
Freya	Fashion-forward full-bust on the UK ladder	28–40, B–K (UK) · chart
Fantasie	Classic UK full-bust construction	30–44, D–K (UK) · chart
Empreinte	French couture that starts at a C cup and simply does not make shallow sizes	80–110, C–H (FR) · chart
Curvy Kate	UK full-bust with strapless and swim depth	28–44, D–K (UK) · chart

Every brand here is one whose published sizing and construction we document; the reason column states what our dossier records, not sponsorship. Size spans come from each brand's own chart.

Size first

Get the size right, then the style

Construction cannot rescue a wrong size. Start from the calculator, and if a specific symptom sent you shopping, decode it first:

The band carries the load Cutting in and spilling

Guides for your size

Size-specific picks

30G 30H 32G 32H 34DDD 34G 36DDD

Each size guide computes which brands genuinely cut it and how each labels it.

The construction, explained

Deep dive

The full construction guide covers how this style is built, who it flatters and its honest trade-offs: Read the f cup and beyond construction guide →

Answered

F cup and beyond, answered

Why do UK brands keep coming up?

Because the UK cup ladder grades one honest step at a time past D, and the houses that use it engineered their blocks for depth rather than grading a shallow block upward.

Is my US letter the same everywhere?

No. Past DDD the alphabets diverge and brands differ; convert by position. The interactive charts on every brand page show each brand's own label for your volume.

What should a supportive bra feel like at this size?

A firm, level band doing most of the work, weight off the shoulders, wire flat against the ribcage. Pain is a fit failure, not the price of size.

Ready to shop

Multi-brand retailers with deep size ranges

Bare Necessities HerRoom Nordstrom Figleaves HauteFlair

Shop links may earn a commission; your price does not change, and commissions never touch the computed tables above. How this site makes money. HauteFlair shares ownership with this site, disclosed here.

Keep exploringSwim sizes, honestly →Bras and back pain, honestly →Breast weight calculator

Shop itAt HauteFlair, our sister retailer

Full-figure bras, DD to K →Plus-size bras

Opens the matching HauteFlair collection; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.

Start from your real size

Every guide on this page assumes a measured size. Two minutes gets you yours.

Calculate My Bra Size →