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18E Bra Size Collection

Understanding the 18E Bra Size

If you wear an 18E bra size, you're not alone—and you've come to the right place. This size blends a band measurement of approximately 40 inches (underbust) or 101.5 cm with a cup volume that accommodates a full bust measurement around 45 inches or 114.3 cm. The number '18' refers to the Australian band size, while 'E' indicates the cup size, designed to provide balanced support and shape for fuller busts. Our bra fit guide can help you find your perfect fit.

International Bra Size Equivalents

Since sizing systems vary across the globe, here's a quick reference conversion table to help translate your Australian size 18E:

RegionEquivalent Size
Australia/NZ Size18E
UK Size40DD
US/Canada Size40DD/E
European Size90E
France105E

How to Measure Your Bra Size

Grab a soft tape measure and follow these two simple steps from our Bra Fitting Guidelines:

  • Step 1: Band Size – Measure snugly under your bust, keeping the tape flat along your side seams. Round to the nearest whole number.
  • Step 2: Bust Measurement – Measure around the fullest part of the breast. Again, round to the nearest whole number.

Subtract the band size from the bust measurement. A difference of 5 inches (approx. 12.7 cm) typically equals an E cup. This is the basis for accurate bra sizing and finding your perfect fit.

Sister Sizes & Fit Flexibility

Your sister size can offer better comfort if your usual size is unavailable. For size 18E, alternatives include:

  • 16F – same cup volume, tighter band
  • 20DD – same cup volume, looser band

Trying on a few sizes, or even booking an in-store bra fitting or a virtual bra fitting, can help you zero in on the ideal size and fit.

Best Bra Styles for Size 18E

  • Full Cup Control Bra – Great for full coverage and support from all angles
  • Seamless Bra – Invisible under clothes with smooth lines
  • Underwire Bra – For added lift and structure
  • Plunge Bra – Perfect for lower necklines
  • 3D Contour Bra – Moulds to your shape for a natural look
  • Lightly Padded Bras – Subtle shaping without added bulk
  • Wireless Bras – Exceptional comfort with no wires
  • Sports Bras – Including styles like the Active D+ Classic and Ultimate Run Bra – Padded, designed for active support
  • Minimiser Bras – Including Triumph's True Shape Sensation, Lacy Minimiser and Berlei's Smoothing Minimiser for a flattering silhouette
  • Nursing Bras – Comfortable options for breastfeeding mothers

Featured Brands Stocking 18E

Feel Supported, Feel Empowered

Finding the right bra is about more than numbers—it's about comfort, confidence, and support that moves with you. Our expert team is here to help, whether it's through, in-store consultation or a simple chat online. Plus, we offer free exchanges, tracked service, and shipping Australia-wide. Shop Now and explore the best in comfort and style.

FAQs

What does 18E mean in bra sizes?

It refers to an Australian size 18 band and E cup. It's suited for busts measuring ~45 inches (114.3 cm) over a ~40-inch (101.5 cm) underbust.

Can I find sports bras or nursing bras in 18E?

Yes! We stock options like the Active D+ Classic and supportive nursing bras for all-day comfort.

What are good styles for full cups?

We suggest full cup bras, seamless, lightly padded and underwire styles for maximum comfort and coverage.

Do you offer virtual fittings or a bra finder quiz?

We offer virtual phone fittings. Stay tuned for our upcoming bra finder quiz feature!

How can I get exclusive offers or $10 off my first order?

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