10JJ Bra Size – Expert Support for Petite Bands & Full Busts
Understanding Bra Size 10JJ
When we talk about a bra size like 10JJ, we're looking at two key measurements: the band size (10) and the cup size (JJ). In Australian sizing, a band size of 10 fits a snug underbust measurement of approximately 68–72 cm. The JJ cup size is one of the fullest available, designed to offer maximum support and coverage for curvy women with a fuller bust size.
This size suits individuals with a petite ribcage and larger bust. While it can be tricky to find in mainstream sizing charts, The Foundation proudly caters to the majority of bra sizes. We specialise in hard-to-find sizes like 10JJ by working closely with premium brands and listening to our customers' needs.
International Size Conversion for 10JJ
| Region | Band Size | Cup Size |
|---|---|---|
| AU | 10 | JJ |
| UK | 32 | JJ |
| US | 32 | N |
| EU | 70 | N |
| FR | 85 | N |
How to Measure Yourself at Home
A proper fit starts with accurate measurements. Follow our fitting guide or refer to our complete size chart:
- Band size: Use a tape measure around your ribcage, just under the bust. Round to the nearest whole number in cm.
- Bust size: Measure around the fullest part of your bust, keeping the tape level and snug.
- Cup size: Subtract your band size from your bust measurement.
Need help? Book our Expert Bra-fitting service, which includes a personalised fit consultation with one of our trained specialists, or enjoy our convenient personalised customer service in-store or online.
Sister Sizes and Fit Flexibility
Can't find your exact size? Consider these sister size alternatives:
- Try 8K (tighter band, same cup volume) or 12J (looser band, same cup volume).
- Sister sizes maintain cup volume but shift the band size for a better fit.
Best Bra Styles for 10JJ
Support and shape are key at this cup size. Recommended styles include:
- Lightly padded bras – Great for shaping the bust and offering a subtle lift without bulk.
- Wireless bras – Provide gentle support with freedom of movement, perfect for daily comfort.
- Seamless bras – Offer a smooth finish under fitted clothes with zero lines.
- Full cup and balconette bras – Deliver reliable support, especially for all-day wear.
- Nursing bras – Designed to adapt to postpartum body changes while offering easy access.
- Sports bras – Crafted to reduce movement and distribute weight evenly for active lifestyles.
These bras are chosen with care to support a wide range of sizes and body shapes.
Brands Available in 10JJ
We specialise in quality plus size bras and inclusive options. At present, the featured brand in size 10JJ is:
- Elomi – Stylish, supportive bras designed for fuller figures.
All our brands are hand-selected based on fit innovation, comfort, and customer feedback, and we regularly review our range to ensure it reflects the latest in design, performance, and customer preferences, ensuring the best for your body.
Your Perfect Fit Awaits
The right bra size does more than fit — it empowers. At The Foundation, our collection in 10JJ is designed to give you the confidence and support you deserve.
Shop Now to explore bras made for your shape and lifestyle. Or, book a fitting with our expert team. Need more? Browse our swimwear for size inclusive options and seasonal favourites.
FAQs
What does 10JJ mean in bra sizing?
It refers to a 10 band size (68–72 cm underbust) with a JJ cup size, tailored for fuller busts.
How do I know if 10JJ is my size?
Measure your underbust and bust with a tape measure. A difference of 30+ cm typically suggests a JJ cup. Or book our Expert Bra-fitting service.
Are 10JJ bras hard to find?
Yes in most stores, but not here. We carry a diverse range of sizes including 10JJ from trusted, supportive brands.
Can I order a sister size?
Definitely! 8K and 12J are ideal sister size options with similar cup size volume.
What are the best everyday styles in 10JJ?
Full cup, lightly padded, and wireless bras are top picks for comfort and support.