Size conversion
What Is a 34K in Other Brands?
Bra sizes are not standardized: the same label means different things brand to brand, so your 34K is a starting point, not a fixed size. A US 34K usually needs a 34L in Victoria’s Secret, maps to a 34H in a true-to-size UK brand like Panache, and stays a 34K in Wacoal.
Your 34K in Victoria's Secret
34L
Cups run a full cup small, so size up
Your 34K in Panache
34H
True-to-size UK sizing
Your 34K in Wacoal
34K
True to size, year after year
Every brand we track
Your 34K, 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 34K → |
|---|---|---|
| ThirdLovein stock | cups run generous | 34K |
| Wacoalin stock | true to size | 34K |
| Glamorisein stock | true to size | 34K |
| SHEFITin stock | - | Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart. |
| b.tempt'din stock | true to size | 34K |
| 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 | 34K |
| Bali | band runs large | 32K |
| Playtex | band runs large | 32K |
| Maidenform | true to size | 34K |
| Vanity Fair | band runs large | 34K |
| Calvin Klein | band runs small | 34K |
| Victoria's Secret | cups run small | 34L |
| Brooks | band runs small | 34K |
| 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 | 34K |
| Torrid | band runs large | 34K |
UK
UK-sized brands (cups run D, DD, E, F, FF, G...)
EU
EU-sized brands
| Brand | How it runs | Your 34K → |
|---|---|---|
| Chantelle | cups run small | 34K |
| Simone Perele | cups run small | 34K |
| PrimaDonna | true to size | 34K |
| Marie Jo | true to size | 34K |
| Triumph | band runs large | 34K |
| Anita | true to size | 34K |
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 34K now
Real bras we track in stock in 34K, with live prices.
Freya
Offbeat Padded Half Cup Bra: Black
$66.00View →
Freya
Offbeat Side Support Bra: Rosehip
$68.00View →
Freya
Offbeat Molded Bra: Rosehip
$70.00View →
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
Starlight Molded Bra: Rosewater
$72.00View →
Freya
Starlight Molded Bra: Caramel
$72.00View →
Freya
Starlight Molded Bra: Black
$72.00View →
34K sister sizes
Sister sizes hold the same cup volume on a different band. If the 34K cup fits but the band doesn’t, try:
Interactive
Try your own size
Not a 34K? Enter any size to see it in every brand. Your size never leaves your browser.
Brand Size Translator
Find your size across different brands
34K
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.
34K
Wacoal
US
True to size; consistent fit across decades.
34K
Panache
UK
UK sizing; true to size, consistent year over year.
34H
Freya
UK
UK sizing; bands run snug.
34H
Elomi
UK
UK plus-size full-bust; cups run generous.
34H
Glamorise
US
US full-figure; true to size.
34K
SHEFIT
US
Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart.
34K
b.tempt'd
US
Wacoal-family fit DNA; runs true to US sizing, lighter construction.
34K
Kindred Bravely
US
Uses XS-XXL nursing/maternity sizing rather than band/cup; size by the brand chart.
34K
ENELL
US
Uses numeric high-impact sizing (00-8) rather than band/cup; size by the brand chart.
34K
Natori
US
Cups run small; consider sizing up.
34K
Chantelle
EU
French sizing; cups run small.
34K
Bali
US
Bands run loose; consider sizing down.
32K
Playtex
US
Bands run large; size down in band.
32K
Maidenform
US
Generally true to size.
34K
Vanity Fair
US
Bands run slightly loose.
34K
Calvin Klein
US
Bands run slightly snug.
34K
Victoria's Secret
US
Cups run very small; size up a full cup.
34L
Fantasie
UK
UK sizing; consistent fit.
34H
Curvy Kate
UK
UK sizing; bands run firm.
34H
Gossard
UK
UK sizing; classic fit.
34H
Pour Moi
UK
UK sizing; budget-friendly.
34H
Simone Perele
EU
French luxury; cups run small.
34K
PrimaDonna
EU
Belgian luxury; true EU sizing.
34K
Marie Jo
EU
Belgian; consistent fit.
34K
Triumph
EU
German; bands slightly generous.
34K
Anita
EU
German; strong post-surgery range.
34K
Brooks
US
Compression sports style; may run snug.
34K
Under Armour
US
Compression fit runs generous; XS-XL sizing rather than band/cup; size by the brand chart.
34K
Nike
US
Generous fit; XS-XL sizing rather than band/cup; size by the brand chart.
34K
Goddess
UK
UK sizing; strong plus-size range.
34H
Cacique
US
Lane Bryant's brand; bands run generous.
34K
Torrid
US
Plus-focused; bands run large.
34K
Common questions
34K conversion questions
- What is a 34K in Victoria's Secret?
- Victoria's Secret cups run about a full cup small, so a standard US 34K usually needs a 34L there. If you already wear a 34K in Victoria's Secret, your size in a true-to-size brand is likely a cup smaller.
- Which brands keep a 34K the same?
- In true-to-size brands a US 34K stays a 34K: 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 34K 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 34K is a 34H; the band number stays the same.
- What size replaces a 34K 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 34K doesn't carry over directly. Start from each brand's chart with your underbust and bust measurements.