Is a 40C the same in every brand?

No - a 40C isn't identical across brands, because brands use different sizing systems and cup depths. Here's how a standard US 40C translates in the brands we track: ThirdLove 40C, Wacoal 40C, Panache 40C, Freya 40C, Elomi 40C, Glamorise 40C, b.tempt'd 40C, Fantasie 40C. SHEFIT, Kindred Bravely, ENELL size by their own chart instead of band/cup.

What are the sister sizes for 40C?

40C's sister sizes — same cup volume, different band — are 38D and 42B. Try a sister size if the band feels too tight or loose but the cup still fits.

40C Bras

What is a 40C in other brands?

368 bras tracked in 40C · 7 brands · See all C cup

Brands: Elomi, Fantasie, Glamorise, Panache, ThirdLove, Wacoal, b.tempt'd

Your 40C across brands

A 40C isn’t the same in every brand. Here’s how a standard US 40C translates across the brands we track — and how each one runs.

Brand	How it runs	Your 40C →
ThirdLove	cups run generous	40C
Wacoal	true to size	40C
Panache	true to size	40C
Freya	band runs small	40C

What is a 40C in other brands? See all 30+ brands →

Sister sizes

38D 42B What are sister sizes?

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Your 40C across brands

Modern Affair Plunge Underwire Bra: Night Sky/Black

Modern Affair Plunge Underwire Bra: Rose Dust/Angel Wing

Modern Affair T-Shirt Bra: Night Sky/Black

Modern Affair T-Shirt Bra: Rose Dust/Angel Wing

Zero Edge™ Contour Bra: Taupe

Zero Edge™ Contour Bra: Leopard

Zero Edge™ Contour Bra: Black

Custom Control Sports Bra White

Custom Control Sports Bra Black

Custom Control Sports Bra Black/Gray

Cate Non Wired Soft Cup Bra: Latte

Cate Non Wired Soft Cup Bra: White

Cate Non Wired Soft Cup Bra: Black

Rose Lace Unlined Demi Bra: Red

ComfortStretch Front Close T-Shirt Bra: Black

ComfortStretch Smoothing Full Coverage Bra: Black

ComfortStretch Back Smoothing T-Shirt Bra: Taupe

ComfortStretch Back Smoothing T-Shirt Bra: Black

All Day Lace T-Shirt Bra: Black

Thermoregulating TempSync™ T-Shirt Bra: Mocha

Thermoregulating TempSync™ T-Shirt Bra: Macaron

ComfortStretch Back Smoothing T-Shirt Bra: Petal

ComfortStretch Smoothing Full Coverage Bra: Petal

All Day Lace Uplift Plunge Bra: Black

All Day Lace T-Shirt Bra: Taupe

ComfortStretch Smoothing Full Coverage Bra: Taupe

Thermoregulating TempSync™ T-Shirt Bra: Taupe

Thermoregulating TempSync™ T-Shirt Bra: Black

ComfortStretch Front Close T-Shirt Bra: Taupe

ComfortStretch Smoothing Full Coverage Bra: Dreamy-Lilac

All Day Lace Uplift Plunge Bra: Sea-Salt

Elevated Allure Wire Free Bra: Black

Elevated Allure Wire Free Bra: Rose Dust

High Impact Underwire Sports Bra Cafe

High Impact Underwire Sports Bra Black

Smoothing Molded Strapless Bra: Nude

Smoothing Molded Strapless Bra: Black

Back Appeal® Wire Free Bra: Dark Slate

Awareness Underwire Bra: Sand

Awareness Underwire Bra: Ivory

Awareness Underwire Bra: Black

Awareness Underwire Bra: Dark Slate

Retro Chic Full Figure Underwire Bra: Toast

Retro Chic Full Figure Underwire Bra: Rose Dust

Retro Chic Full Figure Underwire Bra: Black

Retro Chic Full Figure Underwire Bra: Bungee Cord

Inside Job™ Wire Free Bra: Black

Inside Job™ Wire Free Bra: Lavender Sage

Inside Job™ Wire Free Bra: Sand

Inside Job™ Wire Free Bra: Roebuck

How Perfect Wire Free T-Shirt Bra: Sand

How Perfect Wire Free T-Shirt Bra: Black

Vivid Attraction Underwire Bra: White

Vivid Attraction Underwire Bra: Black

Vivid Attraction Underwire Bra: Woodrose

Vivid Attraction Underwire Bra: Dark Purple

Back Appeal® Wire Free Bra: Black

Back Appeal® Wire Free Bra: Rose Dust

Vivid Attraction Underwire Bra: Soft Sky

Taking Sides Underwire Bra: Black