30DD Bras, Lingerie, and Swimwear | 30DD Bra Size

Bra sizing can be confusing, especially with different international standards. 30DD lingerie and swimwear in US sizing is equivalent to a 30E in European brands like Chantelle, Empreinte, and Prima Donna. That’s why HerRoom created the Universal Cup Sizing™ (UCS) system, which helps you shop across different brands with ease. By searching for 30D2, you’ll find all the bras and swimwear that match your size, whether the label says DD or E.

Items 1-24 of 221

  1. Full-Busted Underwire Sports BraFull-Busted Underwire Sports Bra
    Panache 5021
    Full-Busted Underwire Sports Bra
    Rating:
    90%
    $44.95 - $79.00
  2. Basic Beauty Underwire Spacer T-shirt BraBasic Beauty Underwire Spacer T-shirt Bra
    Wacoal 853192
    Basic Beauty Underwire Spacer T-shirt Bra
    Rating:
    88%
    $42.95 - $65.00
  3. Envy Balconnet BraEnvy Balconnet Bra
    Panache 7285
    Envy Balconnet Bra
    Rating:
    93%
    $52.95 - $72.00
  4. Ana Non-Padded Plunge Underwire BraAna Non-Padded Plunge Underwire Bra
    Panache 9396a
    Ana Non-Padded Plunge Underwire Bra
    Rating:
    91%
    $52.95 - $68.00
  5. Serena Lace Multi-Part Underwire BraSerena Lace Multi-Part Underwire Bra
    Fit Fully Yours b2761
    Serena Lace Multi-Part Underwire Bra
    Rating:
    60%
    $34.99 - $77.00
  6. Bliss Perfection Comfort Contour Underwire BraBliss Perfection Comfort Contour Underwire Bra
    Natori 721154
    Bliss Perfection Comfort Contour Underwire Bra
    Rating:
    95%
    $50.95 - $68.00
  7. Allure Full Cup Underwire BraAllure Full Cup Underwire Bra
    Panache 10765
    Allure Full Cup Underwire Bra
    Rating:
    90%
    $56.95 - $74.00
  8. Elise Molded Convertible BraElise Molded Convertible Bra
    Fit Fully Yours b1812
    Elise Molded Convertible Bra
    Rating:
    91%
    $51.95 - $90.00
  9. Idol Underwire T-Shirt BraIdol Underwire T-Shirt Bra
    Freya aa1050
    Idol Underwire T-Shirt Bra
    Rating:
    89%
    $50.95 - $70.00
  10. Fusion Underwire Full Cup Side Support BraFusion Underwire Full Cup Side Support Bra
    Fantasie fl3091
    Fusion Underwire Full Cup Side Support Bra
    Rating:
    83%
    $37.95 - $66.00
  11. Clara Full Cup BraClara Full Cup Bra
    Panache 7255
    Clara Full Cup Bra
    Rating:
    88%
    $52.95 - $74.00
  12. SuperBra Tango II Underwire Balconnet BraSuperBra Tango II Underwire Balconnet Bra
    Panache 3251
    SuperBra Tango II Underwire Balconnet Bra
    Rating:
    83%
    $48.95 - $64.00
  13. Nicole Sheer Lace BraNicole Sheer Lace Bra
    Fit Fully Yours b2271
    Nicole Sheer Lace Bra
    Rating:
    90%
    $49.95 - $77.00
  14. Wonderwire Stretch Lace Front Closure BraWonderwire Stretch Lace Front Closure Bra
    Glamorise 9245
    Wonderwire Stretch Lace Front Closure Bra
    Rating:
    85%
    $57.00 $34.95 - $42.75
  15. Feathers Contour Plunge BraFeathers Contour Plunge Bra
    Natori 730023
    Feathers Contour Plunge Bra
    Rating:
    95%
    $43.95 - $68.00
  16. Ultra Perform Non Padded Sports BraUltra Perform Non Padded Sports Bra
    Panache 5022
    Ultra Perform Non Padded Sports Bra
    Rating:
    70%
    $59.95 - $79.00
  17. Pure Luxe Contour Underwire BraPure Luxe Contour Underwire Bra
    Natori 732080
    Pure Luxe Contour Underwire Bra
    Rating:
    86%
    $48.95 - $74.00
  18. Victory Side Support Multi Part Cup BraVictory Side Support Multi Part Cup Bra
    Curvy Kate ck9001
    Victory Side Support Multi Part Cup Bra
    Rating:
    81%
    $39.95 - $66.00
  19. Glossies Sheer BraGlossies Sheer Bra
    Gossard 6271
    Glossies Sheer Bra
    Rating:
    89%
    $30.99 - $63.00
  20. Zora Molded Underwire BraZora Molded Underwire Bra
    Fit Fully Yours b1212
    Zora Molded Underwire Bra
    Rating:
    85%
    $80.00
  21. Rebecca Essentials Underwire Moulded Spacer BraRebecca Essentials Underwire Moulded Spacer Bra
    Fantasie fl1310
    Rebecca Essentials Underwire Moulded Spacer Bra
    Rating:
    93%
    $48.95 - $70.00
  22. Sonic Underwire Molded Spacer Sports BraSonic Underwire Molded Spacer Sports Bra
    Freya ac4892
    Sonic Underwire Molded Spacer Sports Bra
    Rating:
    87%
    $34.99 - $74.00
  23. 365 T-Shirt Bra365 T-Shirt Bra
    Panache 10905
    365 T-Shirt Bra
    $76.00
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30DD Bras, Lingerie, and Swimwear | 30DD Bra Size Shop the Best Bras for Women | 30 Day Returns | HerRoom

The Best 30DD Bras: Styles to Explore

A 30DD bust requires the right balance of support and shaping, and HerRoom carries a variety of styles to suit different needs. T-shirt bras provide a smooth, seamless look under clothing, while balconette bras offer a slight lift for a natural, rounded shape. Full-coverage bras ensure maximum support, while plunge bras create a flattering neckline for low-cut tops. If you prefer a wireless option, soft-cup bras provide gentle shaping without underwires. With a well-fitting bra, you can achieve both comfort and confidence in your daily wardrobe.

Understanding Your 30DD Bra Size

If you’re looking for the best 30DD bras for women, then you’ve come to the right place. We offer a wide assortment of styles, brands, and sizes at HerRoom. Whether you’re looking for everyday bras, sexy lingerie, or bra-sized swimwear, we offer options designed to provide the lift and shape you need — without compromising on style. We’re simplifying the shopping process, making it easier to find consistently great-fitting lingerie and 30DD swimwear across different collections.

FAQs

Is 30DD a big size?

A 30DD is not necessarily "big," but it does indicate a fuller cup with a smaller band size. Since bra sizes are relative, 30DD bras have about the same cup volume as a 32D or 34C, just with a tighter band for more support.

What bra size is equivalent to 30DD?

A 30DD is equivalent to a 32D, 34C, or 28E in terms of cup volume. However, because different brands use varying sizing systems, using HerRoom’s Universal Cup Sizing™ (UCS) helps find the best fit.

If you’re looking for the best bras for women, then you’ve come to the right place. We offer a wide assortment of styles, brands, and sizes at HerRoom. Whether you’re an A or a P cup, you’re sure to find the perfect bra.