Question 1

Is a 42I the same in every brand?

Accepted Answer

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

Question 2

What are the sister sizes for 42I?

Accepted Answer

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

42I Bras

Your 42I across brands

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: Dusty Rose

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

Brand	How it runs	Your 42I →
ThirdLove	cups run generous	42I
Wacoal	true to size	42I
Panache	true to size	42G
Bravissimo	true to size	42G