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30DD Bras

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Basic Beauty Spacer Underwire T-Shirt Bra: Black
Up to G cup
Wacoal 853192

Basic Beauty Spacer Underwire T-Shirt Bra

$68
La Femme Underwire T-Shirt Bra: Sand
Wacoal 853117

La Femme Underwire T-Shirt Bra

$68
Undercover Wire Free T-Shirt Bra: Chai
b.tempt'd 956207

Undercover Wire Free T-Shirt Bra

$50
Freya Sonic Sport Underwire Spacer Bra: Nude
UK Cup Sizes
Freya AA4892

Freya Sonic Sport Underwire Spacer Bra

$74
UK Cup Sizes
Back Appeal® Underwire Bra: Rose Dust
Up to H cup
Wacoal 855303

Back Appeal® Underwire Bra

$74
Future Foundation T-Shirt Bra: Burlwood
b.tempt'd 953281

Future Foundation T-Shirt Bra

$48
Future Foundation Wire Free T-Shirt Bra: Night
b.tempt'd 956281

Future Foundation Wire Free T-Shirt Bra

$48
Ciao Bella Strapless Bra: Roebuck
b.tempt'd 954344

Ciao Bella Strapless Bra

$46
Future Foundation T-Shirt Bra: Rose Smoke
b.tempt'd 953281

Future Foundation T-Shirt Bra

$48
b.wow'd Push Up Bra: Night/Animal Accent
b.tempt'd 958287

b.wow'd Push Up Bra

$48
Spotlight Wire Free T-Shirt Bra: Night
b.tempt'd 956293

Spotlight Wire Free T-Shirt Bra

$48
Future Foundation T-Shirt Bra: Night
b.tempt'd 953281

Future Foundation T-Shirt Bra

$48
Future Foundation Wire Free T-Shirt Bra: Burlwood
b.tempt'd 956281

Future Foundation Wire Free T-Shirt Bra

$48
Future Foundation T-Shirt Bra: Thistle
b.tempt'd 953281

Future Foundation T-Shirt Bra

$27.60 $46
30% off
Spotlight Wire Free T-Shirt Bra: Fuchsia Red
b.tempt'd 956293

Spotlight Wire Free T-Shirt Bra

$27.60 $46
40% off
Room Service Wire Free T-Shirt Bra: Night
b.tempt'd 956258

Room Service Wire Free T-Shirt Bra

$28.80 $48
40% off
How Perfect Wire Free T-Shirt Bra: Rose Dust
Wacoal 852189

How Perfect Wire Free T-Shirt Bra

$47.60 $68
30% off
Back Appeal® Underwire Bra: Black
Wacoal 855303

Back Appeal® Underwire Bra

$74
Future Foundation T-Shirt Bra: Mary's Rose
b.tempt'd 953281

Future Foundation T-Shirt Bra

$28.80 $48
40% off
Undercover Wire Free T-Shirt Bra: Cerise
b.tempt'd 956207

Undercover Wire Free T-Shirt Bra

$30 $50
40% off
Future Foundation T-Shirt Bra: Country Blue
b.tempt'd 953281

Future Foundation T-Shirt Bra

$33.60 $48
30% off
Basic Beauty Spacer Underwire T-Shirt Bra: Sand
Best Seller Up to G cup
Wacoal 853192

Basic Beauty Spacer Underwire T-Shirt Bra

$68
How Perfect Wire Free T-Shirt Bra: Orchid Bloom
Wacoal 852189

How Perfect Wire Free T-Shirt Bra

$50.40 $72
30% off
Red Carpet™ Strapless Underwire Bra: Sand
Up to I cup
Wacoal 854119

Red Carpet™ Strapless Underwire Bra

$78
Baseline T-Shirt Bra: Black
New Arrival A-DDD cup
Wacoal 853450

Baseline T-Shirt Bra

$68
Baseline Wire Free T-Shirt Bra: Black
New Arrival A-DDD cup
Wacoal 856450

Baseline Wire Free T-Shirt Bra

$68
Future Foundation T-Shirt Bra: Dusk Pink Dots
New Color A-DDD cup
b.tempt'd 953281

Future Foundation T-Shirt Bra

$48
Red Carpet™ Strapless Underwire Bra: Roebuck
Best Seller Up to H cup
Wacoal 854119

Red Carpet™ Strapless Underwire Bra

$78
Spotlight Wire Free T-Shirt Bra: Crown Blue
b.tempt'd 956293

Spotlight Wire Free T-Shirt Bra

$28.80 $48
40% off
Future Foundation Wire Free T-Shirt Bra: Au Natural
b.tempt'd 956281

Future Foundation Wire Free T-Shirt Bra

$48
Upgraded T-Shirt Bra: Night
b.tempt'd 953380

Upgraded T-Shirt Bra

$33.60 $48
30% off

MORE INFO

30DD Bras for Full Support on a Narrow Band

A 30DD size pairs a narrow band with real cup depth, a combination that many bras simply don't support. Here at Wacoal, our 30DD bras are designed with supportive features like reinforced underwire, secure cups, and a snug band built specifically for this proportion, so you get the coverage and lift a DD cup requires without a band that gaps or rides up.

Our styles include smooth spacer t-shirt bras for everyday wear, wire-free styles for a softer feel, and strapless options reinforced to stay in place under dresses or special occasion tops. Each 30DD style here is built to hold its shape and support through a full day, not just look right on the hanger.

Popular 30DD styles include:

Basic Beauty Spacer Underwire T-Shirt Bra: A best-selling spacer style with breathable cups and seamless construction for smooth, supportive everyday wear, available up to a G cup.

Back Appeal® Underwire Bra: Full coverage underwire style with signature back-smoothing panels that minimize bulges while providing reliable lift, available up to an H cup.

Red Carpet™ Strapless Underwire Bra: A best-selling strapless with medical-grade silicone strips and reinforced construction for secure, all-day support, available up to an H cup.


Find Your Best Fit in 30DD

Looking for a specific style? Explore full coverage bras for maximum containment, t-shirt bras for a smooth, seamless look under everyday tops, or strapless bras for special occasion outfits.


Frequently Asked Questions About 30DD Bras

Is 30DD the same as a 30E?

Yes, in most cases DD is simply the next cup letter after D in standard US sizing, and it lines up with an E cup in some international sizing systems. The cup volume is the same, it's just a labeling difference, so a Wacoal 30DD and a 30E from another sizing chart will generally fit the same.

Why do my straps dig in even though the band isn't tight?

At a DD cup depth, more weight sits on the shoulders through the straps, especially if the band has stretched out. Wider, fully adjustable straps distribute that weight more evenly, and tightening the band slightly can also take pressure off the straps since a snug band should be doing most of the support work.

How do I find the right bra that fits correctly?

For a well-fitting bra, the band should sit level and snug around your ribcage without riding up, the cups should fully contain your bust without gaping at the top or spilling at the sides, and the straps should stay in place without digging in. Use our Bra Fit Calculator or Find Your Fit tools to confirm your size, or book a complimentary virtual bra consultation with a Fit Expert.