Is a 42M the same in every brand?

No - a 42M isn't identical across brands, because brands use different sizing systems and cup depths. Here's how a standard US 42M translates in the brands we track: ThirdLove 42M, Wacoal 42M, Panache 42J, Bravissimo 42J, Freya 42J, Elomi 42J, Glamorise 42M, b.tempt'd 42M, Fantasie 42J. SHEFIT, Kindred Bravely, ENELL size by their own chart instead of band/cup.

What are the sister sizes for 42M?

42M's sister sizes — same cup volume, different band — are 40N and 44L. Try a sister size if the band feels too tight or loose but the cup still fits.

42M Bras

What is a 42M in other brands?

83 bras tracked in 42M · 2 brands · See all M cup

Brands: Elomi, Panache

Your 42M across brands

A 42M isn’t the same in every brand. Here’s how a standard US 42M translates across the brands we track — and how each one runs.

Brand	How it runs	Your 42M →
ThirdLove	cups run generous	42M
Wacoal	true to size	42M
Panache	true to size	42J
Bravissimo	true to size	42J

What is a 42M in other brands? See all 30+ brands →

Editorial buying guide

Read the 42M buying guide

Top picks, sister sizes, and how to spot a good 42M fit.

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Sister sizes

40N 44L What are sister sizes?

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Your 42M across brands

Tango Balcony Bra - Nutmeg

Tango Balcony Bra - Navy

Harmony Plunge Bra - Hot Pink

Tango Essence Balcony Bra - Cherry Red

Esme Balcony Bra - Ziggy

Esme Balcony Bra - Wildflower

Esme Balcony Bra - Wonderland

Bliss Full Cup Bra - Lilac

Estel Full Cup Bra - Royal Blue

Estel Plunge Bra - Royal Blue

Estel Plunge Bra - Blush Pink

Jaida Plunge Bra - Scarlet

Estel Full Cup Bra - Sage

Estel Plunge Bra - Rose Gold

Josephine Full Cup Bra - Cobalt/Latte

Natalia Full Cup Bra - Bordeaux Red

Andorra Full Cup Bra - Pearl

Andorra Full Cup Bra - Black

Illuminate Full Cup Bra - Dark Green

Anya Spot Balcony Tankini Top - Black/White

Anya Spot Balcony Tankini Top - Navy/Ivory

Eden Balcony Bra - Black

Ashley Padded Balcony Bra - Black

Eden Balcony Bra - Pink

Bliss Full Cup Bra - Rose Print

Sophia Plunge Bra - Red

Ella Plunge Bra - Black Sequin

Josephine Full Cup Bra - Forest Green

Estel Full Cup Bra - Cherry Red

Paloma Balcony Swimsuit - Navy Gingham

Tango Essence Balcony Bra - Honey

Tango Essence Balcony Bra - Black

Dream Full Cup Bra - Navy

Tango Edit Balcony Bra - White

Cate Allure Full Cup Banded Bra: Deep Emerald

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

Morgan Stretch Banded Bra: Dark Romance

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: Black

Morgan Stretch Banded Bra: Sahara

Morgan Stretch Banded Bra: Black

Morgan Stretch Banded Bra: Hot House

Molly Nursing Bra: Cameo Rose

Molly Nursing Bra: Black

Zarla Stretch Banded Bra: Rose Bud

Roxie Plunge Bra - Misty Rose

Liberty Plunge Bra - Black