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

Basic Beauty Full Figure Seamless Underwire Bra: Black

High Bar™ Plunge Underwire Bra: White

High Bar™ Plunge Underwire Bra: Black

High Bar™ Plunge Underwire Bra: Lilas

High Bar™ Plunge Underwire Bra: Roebuck

Basic Beauty Full Figure Seamless Underwire Bra: Rose Brown

Halo Lace Underwire Bra: Soft Sky

Front-Closure Posture Back WonderWire Bra Black

Front-Closure Posture Back WonderWire Bra Cafe

Front-Closure Lacey T-Back WonderWire Bra Solid Black

Front-Closure Lacey T-Back WonderWire Bra Black Plum

Front-Closure Lacey T-Back WonderWire Bra Black

Front-Closure Smoothing WonderWire Bra Black

Front-Closure T-Back WonderWire Bra White

Front-Closure T-Back WonderWire Bra Pink Blush

Front-Closure T-Back WonderWire Bra Cafe

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Front-Closure Cotton WonderWire Bra Silver

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Low Cut WonderWire Lace Bra Cafe

Low Cut WonderWire Lace Bra Black

MagicLift Seamless Firm Support Bra White

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MagicLift Seamless Firm Support Bra Black

Halo Lace Strapless Underwire Bra: Black

Slimline Seamless Underwire Minimizer Bra: Sand

Slimline Seamless Underwire Minimizer Bra: Black

Halo Lace Strapless Underwire Bra: Sand

24/7® Classic T-Shirt Bra: Soft-Pink

24/7® Classic T-Shirt Bra: Sienna

24/7® Classic T-Shirt Bra: Mocha

24/7® Classic T-Shirt Bra: Espresso

24/7® Classic T-Shirt Bra: Black

24/7® Classic Perfect Coverage Bra: Taupe

24/7® Classic Perfect Coverage Bra: Soft-Pink

24/7® Classic Perfect Coverage Bra: Black

Kinetic Adjustable Sports Bra: Black

24/7® Classic T-Shirt Bra: Taupe

Thermoregulating TempSync™ T-Shirt Bra: Air

Kinetic Adjustable Sports Bra: Sea-Salt

Perfect Primer Push Up Bra: Sand

Modern Affair Plunge Underwire Bra: Silver Pine/Black

High Bar™ Underwire Bra: White

High Bar™ Underwire Bra: Black

High Bar™ Underwire Bra: Lilas

High Bar™ Underwire Bra: Roebuck

Better Than Braless™ Underwire Bra: Black

Better Than Braless™ Underwire Bra: Sand

Better Than Braless™ Underwire Bra: Roebuck

Better Than Braless™ Underwire Bra: Dark Purple

Modern Affair T-Shirt Bra: Silver Pine/Black

Basic Beauty Spacer Underwire T-Shirt Bra: White

Basic Beauty Spacer Underwire T-Shirt Bra: Black

Basic Beauty Spacer Underwire T-Shirt Bra: Ivory

Basic Beauty Spacer Underwire T-Shirt Bra: Sand

Embrace Lace® T-Shirt Bra: Black

La Femme Underwire T-Shirt Bra: Sand

Awareness Full Figure Seamless Wire Free Bra: Sand

Modern Affair Plunge Underwire Bra: White