Question 1

Is a 38D the same in every brand?

Accepted Answer

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

Question 2

What are the sister sizes for 38D?

Accepted Answer

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

38D Bras

Your 38D across brands

Millie Luxe Bra - Black

Ultimate Comfort Plunge Bra - Black

Millie Luxe Bra - White

Niya Smoothing Bra - Beige

Niya Smoothing Bra - White

Millie Post Surgery Bra - Black

Niya Smoothing Bra - Black

Ultimate Comfort Plunge Bra - Beige

Millie Luxe Bra - Burgundy

Niya Smoothing Bra - Mocha

Coco Bra - Navy

Nellie Bra - Black

Millie Luxe Bra - Amber

Millie Luxe Bra - Forest Green

Millie Post Surgery Bra - Ivory

Millie Nursing Bra - Black

Ultimate Back Smoothing Bra - Beige

Move 360 Sports Bra - Chocolate Brown

Move 360 Sports Bra - Teal

Rita Plunge Swimsuit - Black

Brand	How it runs	Your 38D →
ThirdLove	cups run generous	38D
Wacoal	true to size	38D
Panache	true to size	38D
Bravissimo	true to size	38D