12F Bra Size – Supportive, Stylish & Expert-Fitted
Understanding the 12F Bra Size
The 12F bra size is a specific Australian size, designed for women with a 75cm band size and a fuller bust measurement. In terms of cup size, an F cup means the bust is around 20cm larger than the underbust, creating the ideal shape and support. This bra size is part of the bra size systems used in Australia and aligns with our commitment to helping you find your most comfortable fit. Unlike some international sizing, Australian bras use centimetres for measurements, with sizing conversions necessary when shopping for UK, US, EU, or French brands.
International Size Equivalents
We've put together a handy size conversion chart so you can compare bra sizes across different regions. This is especially useful if you're familiar with international brands.
| Region | Size Equivalent |
|---|---|
| Australia (AU) | 12F |
| United Kingdom (UK) | 34F |
| United States (US) | 34DDD |
| Europe (EU) | 75G |
| France (FR) | 90G |
This international bra size chart helps decode underwear size systems from country to country.
How to Measure Your Bra Size
Grab a tape measure and stand in front of a mirror. Here’s how to measure your body size correctly:
- Band Size: Measure tightly around your ribcage, directly under the bust. Round to the nearest whole number in centimetres—e.g., 75cm equals a size 12 Australian size.
- Bust Measurement: Measure around the fullest part of your bust, without compressing the tissue.
- Cup Size: Subtract your band measurement from your bust measurement. A 20cm difference is typically an F cup.
Need a full breakdown? Check out our Size Chart and Fitting Guide.
Sister Sizes & Alternatives
Not seeing your perfect fit in stock? Try a sister size for the same cup volume but a slightly different band fit:
These options are perfect when you're in-between or if you're experimenting with different fits.
Recommended Bra Styles for 12F
When it comes to fuller bust lingerie bras, comfort is key. Our 12F bras are curated with support, style, and practicality in mind. Best styles include:
- Lightly Padded Bras – Shape without the bulk
- Wireless Bras – Ideal for all-day comfort
- Seamless Bras – A sleek silhouette under clothing
- Full Cup Bras – Perfect for fuller bust bras needs
- Balconette Bras – Adds lift while maintaining structure
While many of these styles offer similar support and structure to swimwear, please note The Foundation does not currently stock dedicated swimwear for size 12F. This is a general recommendation based on fit and functionality.
Brands That Carry 12F
We stock a curated selection of expert brands that cater to fuller bust bras in 12F, including:
- PrimaDonna
- Chantelle
- Empreinte
- Wacoal
- Corin
- Samanta
- Marie Jo
- Simone Perele
- Passionata
- Triumph
- Susa
- Panache
- Freya
- Berlei
- Anita
- Fantasie
From everyday comfort to special occasion support, these brands are selected for their reputation in bra size precision and performance.
Feel Supported, Feel Empowered
Whether you’re upgrading your collection or buying your first premium bra, our 12F range ensures you never compromise on fit. Every piece in this range is designed with your body size, shape, and comfort in mind.
Shop Now to explore our expertly curated 12F bra collection today.
FAQs
What does a 12F bra size mean?
It means you wear a 75cm band size and an F cup size in Australian size terms.
How do I know if 12F is right for me?
Measure your bust and underbust using a tape measure and check against our Size Chart.
What are the best sister sizes for 12F?
Try 14E or 10FF for alternative fits with the same cup size volume.
What bra styles are best for 12F?
Look for full cup, balconette, seamless, and wireless bras for reliable support and comfort.
Do your bras follow the same size across underwear size systems?
Yes, our international size chart ensures accurate cross-regional sizing.