Is a 28J the same in every brand?

No - a 28J isn't identical across brands, because brands use different sizing systems and cup depths. Here's how a standard US 28J translates in the brands we track: ThirdLove 28J, Wacoal 28J, Panache 28GG, Freya 28GG, Elomi 28GG, Glamorise 28J, b.tempt'd 28J, Fantasie 28GG. SHEFIT, Kindred Bravely, ENELL size by their own chart instead of band/cup.

What are the sister sizes for 28J?

28J's sister sizes — same cup volume, different band — are 30I. Try a sister size if the band feels too tight or loose but the cup still fits.

28J Bras

What is a 28J in other brands?

220 bras tracked in 28J · 3 brands · See all J cup

Brands: Bravissimo, Freya, Panache

Your 28J across brands

A 28J isn’t the same in every brand. Here’s how a standard US 28J translates across the brands we track — and how each one runs.

Brand	How it runs	Your 28J →
ThirdLove	cups run generous	28J
Wacoal	true to size	28J
Panache	true to size	28GG
Freya	band runs small	28GG

What is a 28J in other brands? See all 30+ brands →

Editorial buying guide

Read the 28J buying guide

Top picks, sister sizes, and how to spot a good 28J fit.

Read →

Sister sizes

30I What are sister sizes?

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Your 28J across brands

Freya Fancies Balcony Bra (GG - K Cup): Natural Beige

Freya Fancies Balcony Bra (GG - K Cup): Black

Blossom Balcony Bra - Taupe

Blossom Balcony Bra - Black

Offbeat Padded Half Cup Bra: Black

Starlight Side Support Balcony Bra (J - O Cup): Caramel

Starlight Side Support Balcony Bra (J - O Cup): Black

Viva Side Support Bra: Lace Natural Beige

Posie High Apex Bra: White

Entwined Plunge Bra: Daisy

Laurine Plunge Bra: Raspberry

Love Crush Plunge Bra: Aqua Haze

Fascinate Molded Plunge Bra: White

Fascinate Molded Plunge Bra: Cherry

Fascinate Molded Plunge Bra: Black

Tailored High Apex Bra: Dark Sapphire

Loveland Plunge Bra: Bombshell Teal

Freya Fancies Longline Bra: White

Freya Fancies Longline Bra: Black

Blossom Balcony Bra - Celeste

Martha Bra - Blue Multi

Offbeat Side Support Bra: Rosehip

Offbeat Side Support Bra: Natural Beige

Offbeat Side Support Bra: Black

Cherish Me Molded Plunge Bra: Red Leopard

Laurine Molded Plunge Bra: Raspberry

Tailored High Apex Bra: Natural Beige

Tailored High Apex Bra: Black

Loveland Plunge Bra: Bombshell Black

Heidi High Apex Plunge Bra - Ruby Red

Deco Moulded Plunge Molded Plunge Bra: Nude

Deco Moulded Plunge Molded Plunge Bra: Black

Essentially Smooth Molded Balcony Bra: Cameo

Essentially Smooth Molded Balcony Bra: Black

Love Crush Molded Plunge Bra: Aqua Haze

Molded Balcony Bra: Natural Beige

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

Tailored Molded Plunge Bra: Dark Sapphire

Avery Bra - Ivory

Avery Bra - Black

Etta Bra - Black

Amelia Bra - Off White/Black

Starlight Molded Bra: Rosewater

Starlight Molded Bra: Caramel

Starlight Molded Bra: Black

Idol Molded Balcony Bra: Coffee Roast

Idol Molded Balcony Bra: Cinnamon

Posie Longline Bra: White

Tailored Molded Plunge Bra: Natural Beige

Tailored Molded Plunge Bra: Black

Idol Molded Balcony Bra: White

Idol Molded Balcony Bra: Nude

Idol Molded Balcony Bra: Black

Nina Balcony Bra - Black Leopard

Faith Moulded Plunge Bra - Latte