What is a 50B in Victoria's Secret?

Victoria's Secret cups run about a full cup small, so a standard US 50B usually needs a 50C there. If you already wear a 50B in Victoria's Secret, your size in a true-to-size brand is likely a cup smaller.

Which brands keep a 50B the same?

In true-to-size brands a US 50B stays a 50B: Wacoal, Panache, Bravissimo, 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 50B 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 50B is a 50B; the band number stays the same.

What size replaces a 50B 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 50B doesn't carry over directly. Start from each brand's chart with your underbust and bust measurements.

Size conversion

What Is a 50B in Other Brands?

Bra sizes are not standardized: the same label means different things brand to brand, so your 50B is a starting point, not a fixed size. A US 50B usually needs a 50C in Victoria’s Secret, maps to a 50B in a true-to-size UK brand like Panache, and stays a 50B in Wacoal.

Your 50B in Victoria's Secret

50C

Cups run a full cup small, so size up

Your 50B in Panache

50B

True-to-size UK sizing

Your 50B in Wacoal

50B

True to size, year after year

Every brand we track

Your 50B, brand by brand

Grouped by the sizing system each brand labels its cups in. Brands we stock link to their full lineup.

US-sized brands

Brand	How it runs	Your 50B →
ThirdLovein stock	cups run generous	50B
Wacoalin stock	true to size	50B
Glamorisein stock	true to size	50B
SHEFITin stock	-	Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart.
b.tempt'din stock	true to size	50B
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	50B
Bali	band runs large	48B
Playtex	band runs large	48B
Maidenform	true to size	50B
Vanity Fair	band runs large	50B
Calvin Klein	band runs small	50B
Victoria's Secret	cups run small	50C
Brooks	band runs small	50B
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	50B
Torrid	band runs large	50B

UK-sized brands (cups run D, DD, E, F, FF, G...)

Brand	How it runs	Your 50B →
Panachein stock	true to size	50B
Bravissimoin stock	true to size	50B
Freyain stock	band runs small	50B
Elomiin stock	cups run generous	50B
Fantasiein stock	true to size	50B
Curvy Kate	band runs small	50B
Gossard	true to size	50B
Pour Moi	true to size	50B
Goddess	true to size	50B

EU-sized brands

Brand	How it runs	Your 50B →
Chantelle	cups run small	50B
Simone Perele	cups run small	50B
PrimaDonna	true to size	50B
Marie Jo	true to size	50B
Triumph	band runs large	50B
Anita	true to size	50B

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 50B now

Real bras we track in stock in 50B, with live prices.

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Glamorise

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See every 50B bra in stock →

50B sister sizes

Sister sizes hold the same cup volume on a different band. If the 50B cup fits but the band doesn’t, try:

48C What are sister sizes?

Interactive

Try your own size

Not a 50B? Enter any size to see it in every brand. Your size never leaves your browser.

Brand Size Translator

Find your size across different brands

Your base size (US)

50B

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

Half-cup sizing available; cups run slightly generous.

50B

Wacoal

True to size; consistent fit across decades.

50B

Panache

UK sizing; true to size, consistent year over year.

50B

Bravissimo

UK sizing, and its US site labels cups the UK way too (FF, GG, HH). Fit offsets not yet measured.

50B

Freya

UK sizing; bands run snug.

50B

Elomi

UK plus-size full-bust; cups run generous.

50B

Glamorise

US full-figure; true to size.

50B

SHEFIT

Adjustable XS-6Luxe sizing rather than standard band/cup; size by the brand chart.

50B

b.tempt'd

Wacoal-family fit DNA; runs true to US sizing, lighter construction.

50B

Kindred Bravely

Uses XS-XXL nursing/maternity sizing rather than band/cup; size by the brand chart.

50B

ENELL

Uses numeric high-impact sizing (00-8) rather than band/cup; size by the brand chart.

50B

Natori

Cups run small; consider sizing up.

50B

Chantelle

French sizing; cups run small.

50B

Bali

Bands run loose; consider sizing down.

48B

Playtex

Bands run large; size down in band.

48B

Maidenform

Generally true to size.

50B

Vanity Fair

Bands run slightly loose.

50B

Calvin Klein

Bands run slightly snug.

50B

Victoria's Secret

Cups run very small; size up a full cup.

50C

Fantasie

UK sizing; consistent fit.

50B

Curvy Kate

UK sizing; bands run firm.

50B

Gossard

UK sizing; classic fit.

50B

Pour Moi

UK sizing; budget-friendly.

50B

Simone Perele

French luxury; cups run small.

50B

PrimaDonna

Belgian luxury; true EU sizing.

50B

Marie Jo

Belgian; consistent fit.

50B

Triumph

German; bands slightly generous.

50B

Anita

German; strong post-surgery range.

50B

Brooks

Compression sports style; may run snug.

50B

Under Armour

Compression fit runs generous; XS-XL sizing rather than band/cup; size by the brand chart.

50B

Nike

Generous fit; XS-XL sizing rather than band/cup; size by the brand chart.

50B

Goddess

UK sizing; strong plus-size range.

50B

Cacique

Lane Bryant's brand; bands run generous.

50B

Torrid

Plus-focused; bands run large.

50B

Common questions

50B conversion questions

What is a 50B in Victoria's Secret?: Victoria's Secret cups run about a full cup small, so a standard US 50B usually needs a 50C there. If you already wear a 50B in Victoria's Secret, your size in a true-to-size brand is likely a cup smaller.
Which brands keep a 50B the same?: In true-to-size brands a US 50B stays a 50B: Wacoal, Panache, Bravissimo, 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 50B 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 50B is a 50B; the band number stays the same.
What size replaces a 50B 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 50B doesn't carry over directly. Start from each brand's chart with your underbust and bust measurements.

Shop every 50B bra Translate any size How sizing differs by brand