Is a 38J the same in every brand?

No - a 38J isn't identical across brands, because brands use different sizing systems and cup depths. Here's how a standard US 38J translates in the brands we track: ThirdLove 38J, Wacoal 38J, Panache 38GG, Freya 38GG, Elomi 38GG, Glamorise 38J, b.tempt'd 38J, Fantasie 38GG. SHEFIT, Kindred Bravely, ENELL size by their own chart instead of band/cup.

What are the sister sizes for 38J?

38J's sister sizes — same cup volume, different band — are 36K and 40I. Try a sister size if the band feels too tight or loose but the cup still fits.

38J Bras

What is a 38J in other brands?

528 bras tracked in 38J · 7 brands · See all J cup

Brands: Bravissimo, Elomi, Fantasie, Freya, Glamorise, Panache, Wacoal

Your 38J across brands

A 38J isn’t the same in every brand. Here’s how a standard US 38J translates across the brands we track — and how each one runs.

Brand	How it runs	Your 38J →
ThirdLove	cups run generous	38J
Wacoal	true to size	38J
Panache	true to size	38GG
Freya	band runs small	38GG

What is a 38J in other brands? See all 30+ brands →

Editorial buying guide

Read the 38J buying guide

Top picks, sister sizes, and how to spot a good 38J fit.

Read →

Sister sizes

36K 40I What are sister sizes?

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Your 38J across brands

Pippa Side Support Bra: Wallflower

Cate Allure Full Cup Banded Bra: Deep Emerald

Anya Riva Balcony Swimsuit - Black

Monica Balcony Swimsuit - Sicily Print

Heidi High Apex Plunge Bra - Ruby Red

Lara Plunge Swimsuit - Aurora Blue

Monica Balcony Swimsuit - Seersucker Multi

Monica Balcony Swimsuit - Posy Print

Envisage Full Cup Side Support Bra: Natural Beige

Envisage Full Cup Side Support Bra: Black

Fusion Full Cup Side Support Bra: White

Fusion Full Cup Side Support Bra: Sand

Fusion Full Cup Side Support Bra: Evergreen

Fusion Full Cup Side Support Bra: Black

Fusion Full Cup Side Support Bra: Blush

Illusion Side Support Bra: White

Illusion Side Support Bra: Sky

Illusion Side Support Bra: Navy

Illusion Side Support Bra: Natural Beige

Illusion Side Support Bra: Black

Illusion Side Support Bra: Blush

Smooth Molded Bra: Sahara

Smooth Molded Bra: Midnight

Smooth Molded Bra: Haute Red

Smooth Molded Bra: Clove

Smooth Molded Bra: 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

Rocha Non Wired Bra - Misty Rose

Tango Balcony Bra - Honey

Tango Balcony Bra - Blush

Tango Balcony Bra - Black

Rocha Non Wired Bra - Black

Offbeat Molded Bra: Rosehip

Avery Bra - Ivory

Avery Bra - Black

Dream Full Cup Bra - Pistachio

Clara Full Cup Bra - Orchid/Red

Amelia Bra - Cobalt/Gold

Cici Non Wired Bra - Blush Pink

Lacey Bloom Bra - Deep Red

Etta Bra - Black

Amelia Bra - Off White/Black

Fusion Lace Side Support Bra: White

Fusion Lace Side Support Bra: Black

Fusion Lace Side Support Bra: Blush

Reflect Side Support Bra: Red

Reflect Side Support Bra: Navy

Reflect Side Support Bra: Natural Beige

Reflect Side Support Bra: Black

Lucia Side Support Bra: Rosewater

Lucia Side Support Bra: Blue Garden

Adelle Side Support Bra: White

Adelle Side Support Bra: Natural Beige

Adelle Side Support Bra: Black

Lucie Stretch Plunge Bra: Midnight