12GG
12GG Bra Size – Support, Comfort & Style for Curvy Women
What is a 12GG Bra Size?
A 12GG bra size combines a band size of 12 (equivalent to a 34 in UK sizing) with a GG cup size, designed for fuller busts. In Australian sizing, the number 12 refers to the underbust measurement—usually around 77–82 cm—while GG indicates a deep cup volume that provides ample space, support, and shape for larger natural breasts. It's a specialty fit that balances snug underband support with generous bust coverage, ideal for curvy women seeking everyday comfort.
International Bra Size Equivalents
| Region | Size Equivalent |
|---|---|
| Australia (AU) | 12GG |
| United Kingdom (UK) | 34GG |
| United States (US) | 34J |
| Europe (EU) | 75J |
| France (FR) | 90J |
How to Measure Your Bra Size
Use a soft tape measure and follow these simple steps:
- Band size: Measure snugly under your bust. If it reads 77–82 cm, you’re likely a size 12 (AU).
- Bust size: Wrap the tape around the fullest part of your bust, including upper breast tissue and mid breast.
- Subtract the band from bust measurement to get your cup size.
Or try our Bra Sizing Guide for personalised help.
Sister Sizes for 12GG
If your perfect fit isn’t available, try a sister size. These maintain the same cup volume with a different band size:
Finding the right size bra is all about balancing your body size, bust measurement, and comfort preferences.
Best Bra Styles for 12GG
Support and comfort are essential at this size. Here are our top style picks:
- Lightly Padded Bras – Enhance shape while avoiding extra bulk.
- Wireless Bras – Perfect for days when comfort is key, without compromising support.
- Seamless Bras – Smooth under clothing for a sleek silhouette.
- Nursing Bras – Designed for new mothers, offering structure and comfort.
- Full Cup and Side Support Bras – Provide uplift and structure without spillage.
Brands Available in 12GG
We stock a variety of sizes and styles that cater to real bodies. Explore our 12GG range from premium brands like:
- Panache– Strong lift and reliable fit
- Freya – Youthful styles in 8–20 fashion colours
- Elomi – Everyday support for fuller busts
- Fantasie – Elegant looks in Black-Bare-White Select options
We also carry swimwear for size 12GG in 8–18 Petal Pink Select options, backed by our expert bra-fitting service and personalised customer service.
Shop Now – Backed by our Lowest Price Guarantee
FAQs
How do I know if 12GG is right for me?
If you're in 12G and feel spill or tightness, 12GG likely offers the room and support you need. Refer to our size chart.
What should a well-fitting bra feel like?
The band should feel firm but comfortable and stay level. The cups should fully encase your breast tissue—especially the upper breast tissue—without bulging or gaping.
Do bras in 12GG come in stylish designs?
Yes! Our selection includes 8–20 multiple colours, prints, and textures that prove supportive bras can also be stylish.
Can I wear wireless bras in a 12GG?
Absolutely. Look for strong bands and structured cups to ensure all-day support without underwire.
What’s your returns service like?
We accept returns on most full-price items within 30 days. Read our returns service policy for full details.
Need help finding your fit? Visit our stores or reach out—our team offers tailored, compassionate advice. You can also browse our size chart. We're here to support you every step of the way—because confidence starts underneath.