International Bra Size Chart

These international sizes align with our bra band size conversion standards. To learn more, visit our Size Chart.

Sizing Guide: Measuring Your Fit

Finding your perfect bra size starts with a tape measure and some quick maths. This size guide will walk you through it:

1. Measure your band size:

• Wrap a measuring tape snugly around your ribcage, just under your bust (this is your band size).
• Make sure the tape is at tape level, straight and flat.
• A measurement of 68–72cm generally translates to an Australian size 8 band.

2. Measure your bust:

• Take your bust measurement around the fullest part of your breasts (known as the overbust size).
• Ensure the tape isn’t too tight.

3. Calculate the cup size:

• Subtract the band size from the bust size.
• Each inch difference represents a cup letter (approximate size differences). A J cup generally reflects a 28–30cm difference.

If you'd like to double-check, try our bra size calculator for added confidence.

Sister Sizes & Alternatives

Your sister size can be a helpful fallback if your exact bra isn’t available. Sister sizing maintains the same cup volume across different bra band sizes.

For 8J, the common sister sizes are:

• 6K (smaller band, same cup)
• 10H (larger band, same cup)

This is part of a broader range of band sizes and range of cup sizes we cater to.

Best Bra Styles for 8J

When it comes to choosing the right bra style, support and structure are key, especially for larger bust sizes. At The Foundation, our selection includes:

• Lightly padded bras – enhance shape without adding bulk.
• Wireless bras – comfort-focused with excellent hold.
• Seamless bras – great for t-shirts and bodycon dresses.
• Nursing bras – practical support for mothers.
• Sports bras – secure hold during high-impact activity.

All styles are tested for comfort and durability, with our product lines reviewed each season to ensure ongoing quality. This helps guarantee your correct bra size feels just right, every time.

Brands That Stock 8J

At The Foundation, we believe that style and support should go hand-in-hand—no matter your size. That’s why we curate lingerie from brands that combine craftsmanship with comfort, all available in size 8J:

• Samanta – beautifully designed with a focus on fuller cup support and European flair.

• Panache – renowned for its technical fit and stylish support for larger cup sizes.

• Elomi – curve-focused comfort with bold, contemporary designs.

• Marie Jo – sleek, feminine silhouettes with a luxurious touch.

• PrimaDonna – high-end quality crafted specifically for fuller busts with refined finishes.

We update our stock regularly to ensure you always have access to stylish, high-performing bras in 8J.

Explore Our Size Chart & Fit Advice

Want help matching your size? Use our expert-curated size chart or book an in-store expert bra-fitting service. We also provide fit tips and personalised recommendations based on your body size, frame size, and breast shape.

Ready to Feel the Difference?

You deserve a bra that fits like it was made for you. Explore our 8J collection and discover the joy of wearing a correct band size with no compromises.

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