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12HH Bra Size – Fit, Support & Style

Understanding the 12HH Bra Size

The 12HH bra size is ideal for curvy women who require enhanced support and structure due to a fuller bust. In Australian sizing, the number "12" reflects a band size that fits a body underbust measurement of about 80cm. The "HH" refers to the cup size, offering ample volume and depth to accommodate a larger bust while ensuring comfort and lift. If you wear bras in the 12HH/J/JJ range, this collection is tailored for your exact size needs with expert-selected styles.

International Size Conversion Chart

RegionEquivalent Size
Australia (AU)12HH
United Kingdom (UK)34HH
United States (US)34L
Europe (EU)75L
France (FR)90L

Quick Sizing Guide: How to Measure

  • Step 1: Band Size - Wrap a soft tape measure snugly around your ribcage, just under your bust. For example, if you measure around 80cm, you're likely a size 12 band.
  • Step 2: Bust Measurement - Measure around the fullest part of your bust. Subtract your band size from your bust measurement to find your cup size. This is the most accurate way to determine the right size bra.

Not sure? Visit our Bra Sizing Guide for expert online advice, or book an in-store fitting at one of our welcoming locations. Our personalised customer service team is also available via live chat or email to help you find your perfect fit.

Sister Sizes and Fit Options

If 12HH isn’t available, try sister sizes like:

  • 10J for a snugger band
  • 14H for a more relaxed fit

These offer the same cup volume in a slightly different band size—perfect if you're in between sizes or trying to find the most comfortable fit for your body size.

Recommended Bra Styles

Our collection includes a variety of styles curated specifically for size 12HH, J, and JJ. Each style is chosen to deliver comfort, confidence, and reliable support, no matter your daily needs:

  • Lightly Padded Bras — Ideal for shape and smoothness.
  • Seamless Bras — Perfect under tight clothing.
  • Wireless Bras — A comfy, wirefree option for all-day wear.
  • Sports Bras — Designed for secure support during movement.
  • Nursing Bras — For mums, styles like the Plunge Nursing Bra and Wirefree Nursing Bra are available for everyday practicality.

Featured Brands for Fuller Busts

  • Panache Lingerie — Combining elegance with excellent support, Panache offers a wide range of bras specifically engineered to cater to sizes like 12HH. Their designs blend function with style, ensuring you never have to compromise.
  • Elomi — Expertly crafted for curvier women, Elomi provides bras that prioritise structure, comfort, and durability. Each piece in their range is made with fuller busts in mind, delivering reliable fit and confidence throughout the day.

Every piece in our collection is selected not just for quality, style, and support—but because it genuinely caters to the needs of fuller busts like size 12HH. We stock lingerie that fits, flatters, and empowers you daily.

Returns & Service You Can Count On

We believe in making returns as stress-free as possible. Our returns service ensures eligible returns are simple and fair. Please note that return shipping is the customer’s responsibility unless the item is faulty. Read our full return policies for details.

Need help? Contact us for tailored assistance from our team who truly understand bra sizing and comfort.

Ready to Find Your Perfect Fit?

Discover fuller bust lingerie bras that love your curves back. Whether you're shopping for sports bras, nursing bras or classic staples, The Foundation makes it simple to filter by size with our size filters and find your match in just a few clicks.

Shop Now for your perfect 12HH bra at competitive prices, without compromising on quality or service.

FAQs

What does 12HH mean in bra sizing?

A 12HH bra refers to an Australian size with a 12 band size and HH cup size, suitable for curvy women needing more cup volume.

How do I know if 12HH is my exact size?

Use our fitting guide or try our expert bra-fitting service for precise bust measurement and fitting advice.

Do you offer swimwear for size 12HH?

Yes! Our collection includes supportive swimwear for size 12HH/J/JJ. Use our size filters to explore options.

Is Royce Lingerie stocked at The Foundation?

Yes, including favourites like the Eden Organic Cotton range. We love it for its wirefree comfort and sustainable design.

What are the benefits of using sister sizes?

Sister sizes like 10J and 14H offer flexibility when your regular bra size isn't available. They maintain the same cup volume but adjust the band size for comfort.

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