Question 1

Is a 28F the same in every brand?

Accepted Answer

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

Question 2

What are the sister sizes for 28F?

Accepted Answer

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

28F Bras

Your 28F across brands

Gia Bra - Neon Coral

Tilly Bra - Smokey Green

Una Bra - Blush Pink

Lacey Flourish Bra - Navy

Lacey Bra - Beige

Lacey Bra - Black

Posey Bra - White Floral

Lacey Bra - White

Posey Bra - Black Floral

Posey Bra - Navy multi

The Shoulder Ease Bra - Steel Blue

Millie Luxe Non-Wired Bra - Black

Niya Smoothing Bra - Smokey Green

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

Una Bra - Forest Green

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

Brand	How it runs	Your 28F →
ThirdLove	cups run generous	28DDD
Wacoal	true to size	28DDD
Panache	true to size	28E
Freya	band runs small	28E
Elomi	cups run generous	28E
Glamorise	true to size	28DDD
SHEFIT	-	Sizes by brand chart
b.tempt'd	true to size	28DDD
Kindred Bravely	-	Sizes by brand chart
ENELL	-	Sizes by brand chart
Fantasie	true to size	28E