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, Freya 40JJ, Elomi 40JJ, Glamorise 40N, SHEFIT 40N, b.tempt'd 40N, Kindred Bravely 40N, ENELL 40N, Fantasie 40JJ.

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

117 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
Freya	band runs small	40JJ
Elomi	cups run generous	40JJ
Glamorise	true to size	40N
SHEFIT	true to size	40N
b.tempt'd	true to size	40N
Kindred Bravely	true to size	40N
ENELL	true to size	40N
Fantasie	true to size	40JJ

Translate across all 30+ brands →

Editorial buying guide

Read the 40N buying guide

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

Read →

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 - Indigo

Envy Full Cup Bra - Emerald Leopard

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 - Magenta/Latte

Josephine Full Cup Bra - Cobalt/Latte

Natalia Full Cup Bra - Bordeaux Red

Tango Balcony Bra - Chai

Upbeat Wired Sports Bra - Blue

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

Renee Balcony Tankini Top - Navy Gingham

Iris Balcony Tankini Top - Green Gingham

Estel Full Cup Bra - Cherry Red

Activate Wired Sports Bra - Black/Chalk

Paloma Balcony Swimsuit - Black Sand Print

Paloma Balcony Swimsuit - Navy Gingham

Paloma Balcony Swimsuit - Flutter Print

Paloma Balcony Swimsuit - Green Gingham

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

Morgan Stretch Banded Bra: Cameo Rose

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

Morgan Stretch Banded Bra: Black

Morgan Stretch Banded Bra: Toasted Almond

Morgan Stretch Banded Bra: Hot House

Morgan Stretch Banded Bra: Ebony

Tiernie Stretch Plunge Bra: Sahara

Nerina Stretch Plunge Bra: Sahara

Nerina Stretch Plunge Bra: Black

Serene Full Cup Bra - Noir

Molly Nursing Bra: Cameo Rose

Matilda Plunge Bra: White

Matilda Plunge Bra: Sunset