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, Bravissimo 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?

527 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
Bravissimo	true to size	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.

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Sister sizes

36K 40I What are sister sizes?

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Your 38J across brands

Ultimate Comfort Plunge Bra - Black

Millie Luxe Bra - White

Niya Smoothing Bra - Beige

Niya Smoothing Bra - White

Millie Post Surgery Bra - Black

Millie Luxe Bra - Teal

Niya Smoothing Bra - Black

Una Bra - Forest Green

Ultimate Comfort Plunge Bra - Beige

Millie Luxe Bra - Burgundy

Niya Smoothing Bra - Mocha

Nellie Bra - Black

Millie Luxe Bra - Amber

Una Bra - Black

Millie Luxe Bra - Forest Green

Millie Post Surgery Bra - Ivory

Endurance Wired Sports Bra - Black/Latte

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

Lara Plunge Swimsuit - Aurora Red

Millie Nursing Bra - Black

Apollo Sports Bra - Black

Inspire High Impact Sports Crop - Black

Apollo Sports Bra - Burgundy

Apollo Sports Bra - Leopard Print

Square Neck Tank Top with Built-in Bra - Khaki

Square Neck Tank Top with Built-in Bra - Black

Sienna Balcony Tankini Top - Polka Dot Print

Iris Balcony Tankini Top - Red Gingham

Iris Balcony Tankini Top - Black Gingham

Isabella Balcony Swimsuit - Polka Dot Print

Niya Sculpting Bodysuit - Black

Selena Plunge Tankini Top - Cobalt

Paloma Balcony Swimsuit - Red Gingham

Paloma Balcony Swimsuit - Black Gingham

Rita Plunge Swimsuit - Black

Monica Balcony Swimsuit - Liliflora Print

Monica Balcony Swimsuit - Teal Blue

Lara Plunge Swimsuit - Aurora Black/White

Rita Plunge Swimsuit - Cobalt

Rita Plunge Swimsuit - Red

Gigi Balcony Swimsuit - Sparkle Teal