Is a 40N the same in every brand?

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

What are the sister sizes for 40N?

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

40N Bras

What is a 40N in other brands?

110 bras tracked in 40N · 2 brands · See all N cup

Brands: Elomi, Panache

Your 40N across brands

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

Brand	How it runs	Your 40N →
ThirdLove	cups run generous	40N
Wacoal	true to size	40N
Panache	true to size	40JJ
Bravissimo	true to size	40JJ

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

Editorial buying guide

Read the 40N buying guide

Top picks, sister sizes, and how to spot a good 40N fit.

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Sister sizes

38O 42M What are sister sizes?

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Your 40N across brands

Kira Active Balcony Swimsuit - Mulberry

Tango Balcony Bra - Nutmeg

Tango Balcony Bra - Navy

Envy Full Cup Bra - Terracotta

Bliss Full Cup Bra - Lilac

Botanical Balcony Bikini Top - Botanical Floral

Estel Full Cup Bra - Royal Blue

Estel Full Cup Bra - Sage

Josephine Full Cup Bra - Cobalt/Latte

Natalia Full Cup Bra - Bordeaux Red

Tango Balcony Bra - Chai

Envy Full Cup Bra - Chai

Envy Full Cup Bra - Chestnut

Envy Full Cup Bra - Teal

Bliss Full Cup Bra - Rose Print

Ella Plunge Bra - Black Sequin

Josephine Full Cup Bra - Forest Green

Iris Balcony Tankini Top - Green Gingham

Estel Full Cup Bra - Cherry Red

Paloma Balcony Swimsuit - Black Sand Print

Paloma Balcony Swimsuit - Navy Gingham

Paloma Balcony Swimsuit - Flutter Print

Dream Full Cup Bra - Navy

Tango Edit Balcony Bra - White

Anya Riva Spot Balcony Swimsuit - Navy/Vanilla

Cate Allure Full Cup Banded Bra: Deep Emerald

Anya Riva Balcony Swimsuit - Black

Cate Full Cup Banded Bra: White

Cate Full Cup Banded Bra: Latte

Cate Full Cup Banded Bra: Hazel

Cate Full Cup Banded Bra: Black

Cate Allure Full Cup Banded Bra: Sahara

Cate Allure Full Cup Banded Bra: Black

Tango Balcony Bra - Honey

Tango Balcony Bra - Blush

Tango Balcony Bra - Black

Dream Full Cup Bra - Pistachio

Lucie Stretch Plunge Bra: Midnight

Charley Stretch Plunge Bra: Fawn

Charley Stretch Plunge Bra: Black

Charley Stretch Plunge Bra: Ballet Pink

Charley Plunge Bra: Jet

Sachi Plunge Bra: Cafe Au Lait

Sachi Plunge Bra: Black

Morgan Stretch Banded Bra: Dark Romance

Reja Plunge Bra: Black

Nerina Stretch Plunge Bra: Rouge

Zarla Stretch Banded Bra: Sapphire

Namrah Bandless Plunge Bra: Pale Blush

Kintai Plunge Bra: Black

Lucie Stretch Plunge Bra: Wildcat

Lucie Stretch Plunge Bra: White

Lucie Stretch Plunge Bra: Pale Blush

Lucie Stretch Plunge Bra: Mocha

Lucie Stretch Plunge Bra: Mist

Lucie Stretch Plunge Bra: Black

Morgan Stretch Banded Bra: White

Morgan Stretch Banded Bra: Sahara

Morgan Stretch Banded Bra: Midnight

Morgan Stretch Banded Bra: Haute Red