Size conversion
What Is a 34M in Other Brands?
Bra sizes are not standardized: the same label means different things brand to brand, so your 34M is a starting point, not a fixed size. A US 34M usually needs a 34N in Victoria’s Secret, maps to a 34J in a true-to-size UK brand like Panache, and stays a 34M in Wacoal.
Your 34M in Victoria's Secret
34N
Cups run a full cup small, so size up
Your 34M in Panache
34J
True-to-size UK sizing
Your 34M in Wacoal
34M
True to size, year after year
Every brand we track
Your 34M, brand by brand
Grouped by the sizing system each brand labels its cups in. Brands we stock link to their full lineup.
US
US-sized brands
| Brand | How it runs | Your 34M → |
|---|---|---|
| ThirdLovein stock | cups run generous | 34M |
| Wacoalin stock | true to size | 34M |
| Glamorisein stock | true to size | 34M |
| SHEFITin stock | - | Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart. |
| b.tempt'din stock | true to size | 34M |
| Kindred Bravelyin stock | - | Uses XS-XXL nursing/maternity sizing rather than band/cup; size by the brand chart. |
| ENELLin stock | - | Uses numeric high-impact sizing (00-8) rather than band/cup; size by the brand chart. |
| Natori | cups run small | 34M |
| Bali | band runs large | 32M |
| Playtex | band runs large | 32M |
| Maidenform | true to size | 34M |
| Vanity Fair | band runs large | 34M |
| Calvin Klein | band runs small | 34M |
| Victoria's Secret | cups run small | 34N |
| Brooks | band runs small | 34M |
| Under Armour | - | Compression fit runs generous; XS-XL sizing rather than band/cup; size by the brand chart. |
| Nike | - | Generous fit; XS-XL sizing rather than band/cup; size by the brand chart. |
| Cacique | band runs large | 34M |
| Torrid | band runs large | 34M |
UK
UK-sized brands (cups run D, DD, E, F, FF, G...)
EU
EU-sized brands
| Brand | How it runs | Your 34M → |
|---|---|---|
| Chantelle | cups run small | 34M |
| Simone Perele | cups run small | 34M |
| PrimaDonna | true to size | 34M |
| Marie Jo | true to size | 34M |
| Triumph | band runs large | 34M |
| Anita | true to size | 34M |
Translations are guidance from cross-brand fit data, not a guarantee - fit also depends on breast shape and style. Cross-brand offset data v1-2026-05-28.
In stock now
Shop 34M now
Real bras we track in stock in 34M, with live prices.
Freya
Offbeat Side Support Bra: Rosehip
$68.00View →
Freya
Starlight Side Support Balcony Bra (J - O Cup): Caramel
$66.00View →
Freya
Starlight Side Support Balcony Bra (J - O Cup): Black
$66.00View →
Freya
Viva Side Support Bra: Lace Natural Beige
$66.00View →
Freya
Offbeat Side Support Bra: Natural Beige
$68.00View →
Freya
Offbeat Side Support Bra: Black
$68.00View →
Freya
Freya Fancies Balcony Bra (GG - K Cup): White
$64.00View →
Freya
Freya Fancies Balcony Bra (GG - K Cup): Natural Beige
$64.00View →
34M sister sizes
Sister sizes hold the same cup volume on a different band. If the 34M cup fits but the band doesn’t, try:
Interactive
Try your own size
Not a 34M? Enter any size to see it in every brand. Your size never leaves your browser.
Brand Size Translator
Find your size across different brands
34M
Why sizes vary: Each brand uses different patterns, materials, and fit philosophies. A 34DD in Victoria's Secret fits differently than a 34DD in Panache.
ThirdLove
US
Half-cup sizing available; cups run slightly generous.
34M
Wacoal
US
True to size; consistent fit across decades.
34M
Panache
UK
UK sizing; true to size, consistent year over year.
34J
Freya
UK
UK sizing; bands run snug.
34J
Elomi
UK
UK plus-size full-bust; cups run generous.
34J
Glamorise
US
US full-figure; true to size.
34M
SHEFIT
US
Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart.
34M
b.tempt'd
US
Wacoal-family fit DNA; runs true to US sizing, lighter construction.
34M
Kindred Bravely
US
Uses XS-XXL nursing/maternity sizing rather than band/cup; size by the brand chart.
34M
ENELL
US
Uses numeric high-impact sizing (00-8) rather than band/cup; size by the brand chart.
34M
Natori
US
Cups run small; consider sizing up.
34M
Chantelle
EU
French sizing; cups run small.
34M
Bali
US
Bands run loose; consider sizing down.
32M
Playtex
US
Bands run large; size down in band.
32M
Maidenform
US
Generally true to size.
34M
Vanity Fair
US
Bands run slightly loose.
34M
Calvin Klein
US
Bands run slightly snug.
34M
Victoria's Secret
US
Cups run very small; size up a full cup.
34N
Fantasie
UK
UK sizing; consistent fit.
34J
Curvy Kate
UK
UK sizing; bands run firm.
34J
Gossard
UK
UK sizing; classic fit.
34J
Pour Moi
UK
UK sizing; budget-friendly.
34J
Simone Perele
EU
French luxury; cups run small.
34M
PrimaDonna
EU
Belgian luxury; true EU sizing.
34M
Marie Jo
EU
Belgian; consistent fit.
34M
Triumph
EU
German; bands slightly generous.
34M
Anita
EU
German; strong post-surgery range.
34M
Brooks
US
Compression sports style; may run snug.
34M
Under Armour
US
Compression fit runs generous; XS-XL sizing rather than band/cup; size by the brand chart.
34M
Nike
US
Generous fit; XS-XL sizing rather than band/cup; size by the brand chart.
34M
Goddess
UK
UK sizing; strong plus-size range.
34J
Cacique
US
Lane Bryant's brand; bands run generous.
34M
Torrid
US
Plus-focused; bands run large.
34M
Common questions
34M conversion questions
- What is a 34M in Victoria's Secret?
- Victoria's Secret cups run about a full cup small, so a standard US 34M usually needs a 34N there. If you already wear a 34M in Victoria's Secret, your size in a true-to-size brand is likely a cup smaller.
- Which brands keep a 34M the same?
- In true-to-size brands a US 34M stays a 34M: Wacoal, Panache, Glamorise, b.tempt'd, Maidenform, Fantasie, Gossard, Pour Moi, PrimaDonna, Marie Jo, Anita, Goddess. Fit can still vary by style, so treat the label as the starting point.
- Do UK brands size a 34M differently from US brands?
- UK brands label cups in a different sequence above D (D, DD, E, F, FF, G), so the same letters can mean different volumes. In a true-to-size UK brand like Panache, a US 34M is a 34J; the band number stays the same.
- What size replaces a 34M in brands that don't use cup sizes?
- SHEFIT, Kindred Bravely, ENELL, Under Armour, Nike size by their own charts (XS-XL or numeric) instead of band/cup, so a 34M doesn't carry over directly. Start from each brand's chart with your underbust and bust measurements.