6C Bras – Petite Support with a Fuller Cup Fit
Looking for 6C bras in Australia? You’ve found the right place. At The Foundation, we specialise in hard-to-find sizes like 6C — a unique fit for those with a small band size and fuller cup size. Whether you're new to your measurements or searching for the right style, our collection is designed to help you feel confident, supported, and effortlessly stylish.
Understanding the 6C Bra Size
A 6C means a very petite underbust (band) with a noticeably fuller bust than a 6B or 6A. It’s part of the Australian bra size system and perfect for those with a narrow frame but more breast tissue. Cup size always depends on band measurement, so a 6C is not the same volume as a 12C. That’s why knowing your bust measurement and calculating the correct bra size is key.
International Bra Size Conversion for 6C
| Country | Equivalent Size |
|---|---|
| UK | 28C |
| US | 28C |
| EU | 60C |
| FR | 75C |
Use our SIZE CHART for a full international bra size chart and conversion help.
How to Measure for a 6C
For the most accurate measurement, grab a tape measure and follow these steps on a level surface:
- Band size: Measure snugly around your ribcage, just under the bust. If your underbust is around 58–62 cm, you’re likely a size 6 band.
- Bust size: Measure around the fullest part of your bust. If the difference is about 3.5 cm from your band, that equals a C cup.
This difference follows the standard bra size systems used in Australia and internationally.
Sister Sizes for 6C
Can’t find your perfect 6C bra in a certain style? Try these sister sizes as alternatives:
- 8B – same cup volume, slightly wider band
- 4D – same cup volume, smaller band
These sizes are great backup options for the same fit across brands that may not list 6C directly.
Our 6C Range at The Foundation
We stock select Australian brands and international names like Simone Perele, Triumph, and Chantelle that support petite cup sizes like 6C. Explore push-up bras, soft-cup styles, convertible strap bras, and everyday comfort designs that honour your frame size and shape. All crafted in breathable, high-quality materials with a focus on fit and form.
Need Sizing or Style Help?
Our friendly customer service team is here to guide you through online shopping, size conversions, or fit issues. Use our size guide or contact us for personalised advice. We're committed to helping you find the correct size and style to suit your body and comfort preferences.
Frequently Asked Questions About 6C Bras
How do I know if I’m a 6C?
Measure your underbust and bust. If your underbust is around 60 cm and the difference between bust and band is about 3.5 cm, you may be a 6C. Check with our SIZE CHART.
Do you have push-up bras in 6C?
Yes! Some of our 6C options include light push-up bras designed to enhance shape and support smaller frames with fuller busts.
What are my sister sizes?
Your sister sizes include 8B and 4D. These offer similar fit and volume across different bands.
Do 6C bras vary by brand?
Yes. Brands use different sizing grids, so always refer to our bra size conversion chart and size guide before buying.
Is 6C a common size?
It’s less common, but not unusual. At The Foundation, we work to include sizes like 6C to cater to a broader range of cup sizes.