Size conversion
What Is a 38M in Other Brands?
Bra sizes are not standardized: the same label means different things brand to brand, so your 38M is a starting point, not a fixed size. A US 38M usually needs a 38N in Victoria’s Secret, maps to a 38J in a true-to-size UK brand like Panache, and stays a 38M in Wacoal.
Your 38M in Victoria's Secret
38N
Cups run a full cup small, so size up
Your 38M in Panache
38J
True-to-size UK sizing
Your 38M in Wacoal
38M
True to size, year after year
Every brand we track
Your 38M, 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 38M → |
|---|---|---|
| ThirdLovein stock | cups run generous | 38M |
| Wacoalin stock | true to size | 38M |
| Glamorisein stock | true to size | 38M |
| SHEFITin stock | - | Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart. |
| b.tempt'din stock | true to size | 38M |
| 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 | 38M |
| Bali | band runs large | 36M |
| Playtex | band runs large | 36M |
| Maidenform | true to size | 38M |
| Vanity Fair | band runs large | 38M |
| Calvin Klein | band runs small | 38M |
| Victoria's Secret | cups run small | 38N |
| Brooks | band runs small | 38M |
| 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 | 38M |
| Torrid | band runs large | 38M |
UK
UK-sized brands (cups run D, DD, E, F, FF, G...)
EU
EU-sized brands
| Brand | How it runs | Your 38M → |
|---|---|---|
| Chantelle | cups run small | 38M |
| Simone Perele | cups run small | 38M |
| PrimaDonna | true to size | 38M |
| Marie Jo | true to size | 38M |
| Triumph | band runs large | 38M |
| Anita | true to size | 38M |
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 38M now
Real bras we track in stock in 38M, 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 →
38M sister sizes
Sister sizes hold the same cup volume on a different band. If the 38M cup fits but the band doesn’t, try:
Interactive
Try your own size
Not a 38M? Enter any size to see it in every brand. Your size never leaves your browser.
Brand Size Translator
Find your size across different brands
38M
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.
38M
Wacoal
US
True to size; consistent fit across decades.
38M
Panache
UK
UK sizing; true to size, consistent year over year.
38J
Freya
UK
UK sizing; bands run snug.
38J
Elomi
UK
UK plus-size full-bust; cups run generous.
38J
Glamorise
US
US full-figure; true to size.
38M
SHEFIT
US
Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart.
38M
b.tempt'd
US
Wacoal-family fit DNA; runs true to US sizing, lighter construction.
38M
Kindred Bravely
US
Uses XS-XXL nursing/maternity sizing rather than band/cup; size by the brand chart.
38M
ENELL
US
Uses numeric high-impact sizing (00-8) rather than band/cup; size by the brand chart.
38M
Natori
US
Cups run small; consider sizing up.
38M
Chantelle
EU
French sizing; cups run small.
38M
Bali
US
Bands run loose; consider sizing down.
36M
Playtex
US
Bands run large; size down in band.
36M
Maidenform
US
Generally true to size.
38M
Vanity Fair
US
Bands run slightly loose.
38M
Calvin Klein
US
Bands run slightly snug.
38M
Victoria's Secret
US
Cups run very small; size up a full cup.
38N
Fantasie
UK
UK sizing; consistent fit.
38J
Curvy Kate
UK
UK sizing; bands run firm.
38J
Gossard
UK
UK sizing; classic fit.
38J
Pour Moi
UK
UK sizing; budget-friendly.
38J
Simone Perele
EU
French luxury; cups run small.
38M
PrimaDonna
EU
Belgian luxury; true EU sizing.
38M
Marie Jo
EU
Belgian; consistent fit.
38M
Triumph
EU
German; bands slightly generous.
38M
Anita
EU
German; strong post-surgery range.
38M
Brooks
US
Compression sports style; may run snug.
38M
Under Armour
US
Compression fit runs generous; XS-XL sizing rather than band/cup; size by the brand chart.
38M
Nike
US
Generous fit; XS-XL sizing rather than band/cup; size by the brand chart.
38M
Goddess
UK
UK sizing; strong plus-size range.
38J
Cacique
US
Lane Bryant's brand; bands run generous.
38M
Torrid
US
Plus-focused; bands run large.
38M
Common questions
38M conversion questions
- What is a 38M in Victoria's Secret?
- Victoria's Secret cups run about a full cup small, so a standard US 38M usually needs a 38N there. If you already wear a 38M in Victoria's Secret, your size in a true-to-size brand is likely a cup smaller.
- Which brands keep a 38M the same?
- In true-to-size brands a US 38M stays a 38M: 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 38M 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 38M is a 38J; the band number stays the same.
- What size replaces a 38M 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 38M doesn't carry over directly. Start from each brand's chart with your underbust and bust measurements.