Is a 30G the same in every brand?

No - a 30G isn't identical across brands, because brands use different sizing systems and cup depths. Here's how a standard US 30G translates in the brands we track: ThirdLove 30G, Wacoal 30G, Panache 30F, Freya 30F, Elomi 30F, Glamorise 30G, b.tempt'd 30G, Fantasie 30F. SHEFIT, Kindred Bravely, ENELL size by their own chart instead of band/cup.

What are the sister sizes for 30G?

30G's sister sizes — same cup volume, different band — are 28H and 32F. Try a sister size if the band feels too tight or loose but the cup still fits.

30G Bras

What is a 30G in other brands?

505 bras tracked in 30G · 7 brands · See all G cup

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

Your 30G across brands

A 30G isn’t the same in every brand. Here’s how a standard US 30G translates across the brands we track — and how each one runs.

Brand	How it runs	Your 30G →
ThirdLove	cups run generous	30G
Wacoal	true to size	30G
Panache	true to size	30F
Freya	band runs small	30F

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

Sister sizes

28H 32F What are sister sizes?

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Your 30G across brands

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

Rocha Non Wired Bra - Misty Rose

Tango Balcony Bra - Honey

Tango Balcony Bra - Blush

Tango Balcony Bra - Black

Allure Demi Plunge Bra - Black/Latte

Rocha Non Wired Bra - Black

Offbeat Molded Bra: Rosehip

Tailored Molded Plunge Bra: Dark Sapphire

Loveland Molded Spacer Bra: Bombshell Teal

Demure Molded Non Padded Bra: Fig

Avery Bra - Ivory

Avery Bra - Black

Clara Full Cup Bra - Orchid/Red

Post Surgery Bra - Red

Amelia Bra - Cobalt/Gold

Adele Bra - Burgundy

Cici Non Wired Bra - Blush Pink

Adele Bra - Black

Lacey Bloom Bra - Deep Red

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

Quinn Molded Spacer Bra: Cameo

Quinn Molded Spacer Bra: Black

Posie Longline Bra: White

Tailored Molded Plunge Bra: Natural Beige

Tailored Molded Plunge Bra: Black

Loveland Molded Spacer Bra: Bombshell Black

Idol Molded Balcony Bra: White

Idol Molded Balcony Bra: Nude

Idol Molded Balcony Bra: Black

Smoothing Molded Strapless Bra: Nude

Smoothing Molded Strapless Bra: Black

Fusion Lace Padded Plunge Bra: White

Fusion Lace Padded Plunge Bra: Black

Fusion Lace Padded Plunge Bra: Blush

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

Nina Balcony Bra - Black Leopard

Faith Moulded Plunge Bra - Latte