The Best Bras for 30G
Computed from published size charts, not sponsorships: 28 of the 49 brands we chart cut a 30G. That is real choice with real differences, so the table below separates brands that carry it deep in their range from those where it is a chart-edge size, each in the brand's own notation.
30G in every system
Cup letters diverge above D, so the letter changes even though the bra does not. Convert by position, and match the printed tag in the table below.
Strong first tries at 30G
These are chosen by rule, not payment: your size sits inside each chart, away from its edges, and these houses grade deepest where your proportion needs it. The complete computed list follows.
The complete list: who makes 30G
| Brand | System | Their label for it | Range position | Interactive chart |
|---|---|---|---|---|
| Bravissimo | UK | 30F | well in range | chart → |
| Curvy Kate | UK | 30F | well in range | chart → |
| Freya | UK | 30F | well in range | chart → |
| M&S | UK | 30F | well in range | chart → |
| Panache | UK | 30F | well in range | chart → |
| Anita | EU | 65G | at chart edge | chart → |
| Bendon | AU | 8F | at chart edge | chart → |
| Berlei | AU | 8F | at chart edge | chart → |
| Boux Avenue | UK | 30F | at chart edge | chart → |
| Bras N Things | AU | 8F | at chart edge | chart → |
| Chantelle | FR | 80G | at chart edge | chart → |
| Cuup | US | 30G | at chart edge | chart → |
| Empreinte | FR | 80G | at chart edge | chart → |
| Fantasie | UK | 30F | at chart edge | chart → |
| Gossard | UK | 30F | at chart edge | chart → |
| Harper Wilde | US | 30G | at chart edge | chart → |
| Hunkemöller | EU | 65G | at chart edge | chart → |
| Le Mystère | US | 30G | at chart edge | chart → |
| Peach John | EU | 65G | at chart edge | chart → |
| Pour Moi | UK | 30F | at chart edge | chart → |
| Savage X Fenty | US | 30G | at chart edge | chart → |
| Shock Absorber | UK | 30F | at chart edge | chart → |
| Simone Pérèle | FR | 80G | at chart edge | chart → |
| ThirdLove | US | 30G | at chart edge | chart → |
| Triumph | EU | 65G | at chart edge | chart → |
| Triumph Japan | EU | 65G | at chart edge | chart → |
| Wacoal | US | 30G | at chart edge | chart → |
| Wacoal Japan | EU | 65G | at chart edge | chart → |
Of the 28: 5 carry 30G well inside their chart, 23 at its edge. Well in range means the size sits inside the brand's chart, cut from a block graded around it. At chart edge means it is the first or last size they make, which is real but drafted at the limit of their grading. Your measured size guide: the universal 30G page.
Is 30G actually your size?
Same published math as the calculator: snug measure, no added inches.
How to choose at 30G
30G is the classic full-bust-small-band combination, and it is exactly where most high-street charts stop. The math is unforgiving: a small underbust with a large bust-to-band difference needs a firm short band and a deep, often narrow wire, and only brands that engineer for it cut it at all.
The brands that carry 30G deep inside their range, rather than at its edge, drafted their blocks for this proportion. UK full-bust houses dominate here for a structural reason: the UK letter ladder was extended precisely to grade these volumes honestly.
Seamed cups earn their keep at this depth. A three-part seamed cup controls projection and keeps the wire against the ribcage in a way molded foam cannot at the same depth.
Watch for: If the table below is short, that is the market, not your body. Sister sizing up a band trades away support exactly where you need it most, so treat 30-band substitutes for a 28 band as a last resort.
Constructions that work for a small ribcage carrying real cup depth
Each guide explains the construction, who it flatters and its honest trade-offs.
Sister sizes for 30G
A sister size keeps identical cup volume on a different band. If the 30G band rides up or digs in while the cup fits, the sister is the fix.
30G bras, answered
Which brands make a 30G bra?
Of the 49 brands whose published size charts we track, 28 cut a 30G. The strongest first tries: Bravissimo, Curvy Kate, Freya, M&S. The full table on this page lists every one in the brand's own notation, converted by chart position.
What is 30G in other sizing systems?
US: 30G. UK: 30F. EU / DE: 65G. FR / ES: 80G. AU / NZ: 8F. IT: 1ªG. JP: H65. Letters diverge above D, so always convert by position, not by letter.
What styles work best for 30G?
For a small ribcage carrying real cup depth: Balconette, Side-support and full cup, High-impact sports, Longline, Minimizer. If the table below is short, that is the market, not your body. Sister sizing up a band trades away support exactly where you need it most, so treat 30-band substitutes for a 28 band as a last resort.
Multi-brand retailers with deep size ranges
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.
HauteFlair labels cups in UK letters, so these links already convert your size by position (a US DDD lands on a UK E, a US G on a UK F). 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.
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