12G Bra Size – Expert Fit for Fuller Busts
Understanding Your 12G Bra Size
Finding a bra that fits well is transformative—especially for curvy women. A 12G bra size means your band size is 12 (AU sizing), and your cup size is G, offering supportive coverage for fuller busts. The band size refers to the measurement around your ribcage under your bust, and the cup size indicates breast volume.
At The Foundation, we prioritise expert fittings and high-quality options for every body size. Our fitting guide, helpful customer service, and curated range ensure you always find your best fit.
International Bra Size Conversion for 12G
Bra sizes vary globally, so here's a handy size conversion chart:
| Region | Size Equivalent |
|---|---|
| Australia (AU) | 12G |
| United Kingdom (UK) | 34F |
| United States (US) | 34I |
| Europe (EU) | 75G |
| France (FR) | 90G |
How to Measure Your Bra Size
Use a soft tape measure and follow these steps for your bust measurements:
- Band Size (Underbust): Measure snugly around your ribcage just below the bust. If your underbust is between 77–82cm, your band size is likely 12.
- Bust Size (Overbust): Measure the fullest part of your bust while keeping the tape comfortably firm.
- Cup Size: Subtract the band measurement from the bust measurement. Every 2.5cm difference is approximately one cup size.
Explore our bra sizing guide calculator for an exact size recommendation.
Sister Sizes & Fit Flexibility
If 12G isn’t available in a particular bra, try a sister size:
These alternatives ensure the same cup volume with different band sizes—perfect if your body size fluctuates or brand sizing varies.
Best Bra Styles for 12G & Curvy Women
Support meets style in these fuller bust lingerie favourites:
- Lightly Padded Bras: Subtle shaping for smooth lines.
- Wireless Bras: Ultimate comfort—great for sleepwear and casual days.
- Seamless Bras: Invisible under clothes, ideal for fitted outfits.
- Full-Cup & Balconette Bras: Full support and lift for daily wear.
- Sports Bras: Designed to minimise bounce—look for Size No-Bounce or Size Wonderwire Posture options.
- Nursing Bras: Gentle, accessible support for breastfeeding mums.
Premium Brands That Stock 12G
Our curated 12G range includes premium labels known for expert construction and fashion-forward design:
- Chantelle
- PrimaDonna
- Empreinte
- Corin
- Samanta
- Simone Perele
- Susa
- Panache
- Triumph
- Freya
- Anita
- Passionata
- Fantasie
- Elomi
Use our size chart to find your product size with confidence.
Personalised Support & Services
Need help? Our friendly customer service team offers personalised customer service via online chat, email, or in-store fittings. Take advantage of our expert bra-fitting service to ensure your bra is as comfortable as it is supportive.
We’re proud to support Australian women with a wide selection of lingerie, sleepwear, and swimwear for size inclusivity and comfort.
Feel Confident in Your Fit
Your bra is the foundation of your outfit. From daily essentials to specialised support, our 12G collection is here to empower your every day.
Shop Now to find your perfect fit.
FAQs
What does 12G mean in bra sizes?
12G is an Australian bra size with a 12 band and G cup—perfect for fuller busts needing strong support.
Is 12G the same internationally?
Not exactly. It corresponds to 34F (UK), 34I (US), 75G (EU), and 90G (FR).
How do I know if 12G is my exact size?
Use a tape measure or our sizing calculator to compare your band and bust measurements.
Do you have sports or nursing bras in 12G?
Yes! We offer supportive sports bras and comfortable nursing bras in 12G.
What if I fluctuate between sizes?
Try sister sizes like 10H or 14F for more flexibility across brands.