Is a 42J the same in every brand?

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

What are the sister sizes for 42J?

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

42J Bras

What is a 42J in other brands?

167 bras tracked in 42J · 5 brands · See all J cup

Brands: Elomi, Fantasie, Glamorise, Panache, Wacoal

Your 42J across brands

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

Brand	How it runs	Your 42J →
ThirdLove	cups run generous	42J
Wacoal	true to size	42J
Panache	true to size	42GG
Freya	band runs small	42GG

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

Editorial buying guide

Read the 42J buying guide

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

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Sister sizes

40K 44I What are sister sizes?

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Your 42J across brands

Energise Sports Bra: Navy Geo

Energise Sports Bra: White

Energise Sports Bra: Nude

Energise Sports Bra: Navy

Energise Sports Bra: Black

Priya Plunge Bra: Vanilla

Priya Plunge Bra: Black

Molly Nursing Bra: Black

Aerith Plunge Bra: Rose

Darcie Padded Half Cup Bra: Azalea

Darcie Plunge Bra: Azalea

Zarla Stretch Banded Bra: Rose Bud

Zarla Stretch Banded Bra: Cafe Au Lait

Roxie Plunge Bra - Misty Rose

Liberty Plunge Bra - Black

Roxie Plunge Bra - Black

Sophia Plunge Bra - Dusky Blue

Liberty Plunge Bra - Mocha

Charley Bandless Spacer Molded Bra: Fawn

Charley Bandless Spacer Molded Bra: Black

Charley Bandless Spacer Molded Bra: Ballet Pink

Nerina Spacer Molded Bra: Sahara

Nerina Spacer Molded Bra: Black

Bliss Full Cup Bra - Hazel

Bliss Full Cup Bra - Noir

Bliss Full Cup Bra - Rose Pink

Esme Balcony Bra - Mocha Animal

Esme Balcony Bra - Black Animal

Amara Full Cup Bra - Honey

Amara Full Cup Bra - Black

Entice Full Cup Bra - Red

Back Appeal® H-K Cup Underwire Bra: Black

Back Appeal® H-K Cup Underwire Bra: Rose Dust

Back Appeal® H-K Cup Wire Free Bra: Black

Back Appeal® H-K Cup Wire Free Bra: Rose Dust

Muse Plunge Bra - Cameo Rose

Muse Plunge Bra - Black

Sophia Full Cup Bra - Teal Blue

Sophia Full Cup Bra - Sienna Rose

Sophia Full Cup Bra - Black

Dana Balcony Strapless Bra - Linen

Dana Balcony Strapless Bra - Black

Dana Strapless Balcony Bra - Caramel

Estel Full Cup Bra - Honey

Estel Full Cup Bra - Noir

Estel Full Cup Bra - Navy

Dana Balcony Strapless Bra - Hazel