6B Bras – Petite Support with the Perfect Fit
If you’ve been searching for 6B bras in Australian sizes, you’re in the right place. Designed for petite frame customers with a smaller band size and moderate cup size, the 6B is a rare size – but that doesn’t mean you should settle for anything less than the correct bra size. At The Foundation, we celebrate every shape and offer a comprehensive range of sizes with specialised support for smaller busts.
What Is a 6B Bra Size?
The 6B size is part of the Australian bra size charts and represents one of the smallest band measurements paired with a slightly fuller cup size than an A. A 6B is ideal if you have a narrow frame with more breast tissue than what a 6A offers. Cup size is always relative to band size, which is why accurate measurement is essential.
International Bra Size Conversion Chart for 6B
| Country | Equivalent Size |
|---|---|
| UK | 28B |
| US | 28B |
| EU | 60B |
| FR | 75B |
Use our SIZE CHART to understand international bra size chart equivalents and ensure a correct size fit when switching between international brands.
How to Measure for a 6B Bra
For an accurate measurement, use a tape measure on a level surface and follow these steps:
- Band size: Wrap the tape snugly under your bust. A result around 58–62 cm aligns with a 6 band.
- Bust measurement: Measure around the fullest part of your chest. A difference of about 2.5 cm from your band indicates a B cup.
This aligns with the 1-inch difference rule used in most bra size systems to define cup size.
Sister Sizes for 6B
If you can’t find your size in a certain style, try these sister sizes:
- 8A – slightly wider band, smaller cup
- 4C – tighter band, larger cup size
These options provide alternative sizes within the same bra size range.
Bras That Fit 6B at The Foundation
We proudly stock Australian brands and international labels such as Triumph, Simone Perele, and Chantelle — known for their inclusive size offerings. Our styles include push-up bras, convertible straps, and soft-cup favourites tailored for breast shape, frame size, and comfort. Explore our comprehensive range that adapts to your life, whether you’re after everyday basics or elevated lace details.
Support When You Need It
Struggling to find your correct bra size online? Our friendly customer service team is here to guide you. Whether you're comparing your current fit or trying out new bra size systems, we’ll help with measurement chart tips, size guide advice, and bra size conversion charts tailored to your needs.
Frequently Asked Questions About 6B Bras
How do I know if I’m a 6B?
Measure your bust size and band size using a tape measure. If there’s a 2.5 cm difference and your underbust is around 58–62 cm, you're likely a 6B. Use our SIZE CHART to check.
What are sister sizes for 6B?
Sister sizes include 8A (looser band) and 4C (tighter band). These offer fit alternatives if 6B is unavailable in a preferred style.
Do you stock 6B in push-up or padded styles?
Yes! We offer 6B options with light padding, shaping foam, or structured cups across select styles. Look for this in each product description.
Is your size guide accurate for petite frames?
Yes. Our size guide is made for Australian sizes and refined for petite frame customers. It's the best tool to ensure accurate sizing.
Can I get help with sizing online?
Absolutely. Our Customer Care team is available for live chat, email, or in-store fittings. We’ll help you identify your correct size using bust measurement, band size, and current fit.