18FF
18FF Bra Size – Find Your Best Fit
Understanding the 18FF Bra Size
hopping for the right bra can be tricky, especially when you need a specialty size like the 18FF bra size. At The Foundation, we stock this size with pride—because we believe everyone deserves a bra that fits beautifully. This bra size reflects a band size of 18 in Australian sizing and an FF cup size, making it perfect for fuller busts and broader body sizes.
Our expert bra-fitting service is tailored to help you understand what your body needs. Whether you’re shopping for nursing bras, maternity bras, or something for everyday support, we’ve got you covered. We specialise in lingerie sets, matching briefs, and supportive bras that work for big boobs. With a wide range of cup sizes A–K and band sizes 6–24, we cater to every curve.
International Bra Size Conversion Chart
| Region | Size Equivalent |
|---|---|
| Australia (AU) | 18FF |
| United Kingdom (UK) | 40FF |
| United States (US) | 40H |
| Europe (EU) | 90H |
| France (FR) | 105H |
How to Measure Your Bra Size
Get your tape measure ready for this quick and simple guide:
- Step 1: Band Size – Measure firmly under your bust. Round to the nearest whole number. This is your band size.
- Step 2: Bust Measurement – Measure around the fullest part of your bust. Keep it level and relaxed.
- Step 3: Find Your Cup Size – Subtract your band size from your bust measurement. Cross-check with our size chart for your cup.
Still unsure? Try our Bra Finder or book a virtual bra fitting service. Our experienced team of D–K cup bra-fitters are here to help you find your match.
Sister Sizes & Fit Tips
Finding that sweet spot? Try these sister sizes to get closer to a perfect fit:
These alternatives work well when your current size feels too tight or too loose. Our team is trained in precise adjustments and brand variations to make sure your bra actually fits—not just holds you up.
Top Bra Styles for 18FF
The Foundation offers a wide selection of bra styles to suit different needs, including:
- Lightly padded bras – For shape and coverage without bulk
- Wireless bras – Supportive and comfy for everyday wear
- Seamless bras – Invisible under clothes, perfect for t-shirts
- Full cup bras – Extra support and security for large busts
- Sports bras – Available in low impact, medium impact, and high impact levels
Brands we stock include Elomi Lingerie, Fantasie Lingerie, Panache Lingerie, and Sculptresse Lingerie—all specialists in cup sizes A–K and larger band sizes. Our selection is handpicked by our team of expert fitters, so you’re always getting quality and comfort in equal measure.
Featured Brands
Why Choose The Foundation?
Here’s why customers across Australia trust us:
- Wide range of lingerie brands for every body
- Customer reviews you can trust
- Exclusive special offers and seasonal sales
- Helpful customer service that understands your needs
- Free shipping across Australia on orders over $150
- Simple, fair returns policy
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FAQs
What does 18FF mean in bra sizes?
It refers to an Australian band size of 18 with an FF cup—ideal for broader ribcages and fuller busts.
How do I measure for an 18FF?
Use a tape measure and our fitting guide, or book a bra fitting in-store or virtually.
Which brands carry 18FF?
We stock Elomi Lingerie, Panache Lingerie, Sculptresse Lingerie, and Fantasie Lingerie, all available in 18FF.
Do you offer sports bras in this size?
Yes, including low impact, medium impact, and high impact options with regular back support.
Can I return a bra that doesn’t fit?
Yes, as long as it meets our return policy.