If you wear a 16D bra size, you're rocking a band size of 16 (equivalent to an underbust measurement of around 88–92 cm) and a cup size that's considered a D cup — full, rounded, and supportive. This size follows the Australian sizing system, which differs slightly from international charts. It offers a perfect balance of a broader bra band size for comfort and a medium-full bust for shape. Understanding both your band size and cup size is key to achieving the ultimate fit and feel.

International Size Conversion Chart

Region	Size Equivalent
Australia / NZ	16D
United Kingdom (UK)	38D
United States (US)	38D
Europe (EU)	85D
France / Spain (FR)	100D

Need help interpreting? View our full bra size conversion chart, which includes both Australian and international size systems for easy comparison.

How to Measure Your Bra Size

All you need is a soft tape measure and a mirror:

Band Size: Measure snugly around your ribcage, directly under your bust. Make sure the tape is level. If it's 88–92 cm, you're likely a size 16 band.
Bust Measurement: Measure around the fullest part of your bust, keeping the tape relaxed and level.
Subtract your band measurement from your bust measurement to determine your cup size. A difference of 4 inches (10 cm) typically indicates a D cup.

Need help? Check our fitting guide or use our fitting matrix for more accuracy. We also offer virtual bra fitting services for your convenience.

Sister Sizes & Alternatives

If you’re having trouble with the fit but love the cup feel, try a sister size. Sister sizes share the same cup volume but different band sizes:

Go down a band, up a cup: 14DD
Go up a band, down a cup: 18C

These can work wonders for different body sizes or when a brand's sizing runs slightly larger or smaller.

Best Bra Styles for Size 16D

Whether you're after everyday comfort or something with a touch of elegance, these styles shine in Size 16D:

Lightly padded bras – smooth silhouette with gentle shaping
Wireless bras – all-day ease without digging
Seamless bras – invisible under clothing, perfect for t-shirts
Full-cup bras – added coverage and structured support
Maternity and nursing bras – soft, adaptive support for changing shapes

Looking for new arrivals in 16D? Browse our latest exclusive offers.

Brands Available in 16D

We carry a curated collection of international favourites in 16D, including:

Ready to find your perfect fit? Shop Now and discover our range of fuller bust lingerie in Size 16D bras designed to lift, support, and flatter. For exclusive offers, sign up to our newsletter and get updates on new arrivals. Prefer not to hear from us? No worries – you can opt out anytime using the unsubscribe link in your email.

Frequently Asked Questions

What does 16D mean in bra sizes?

It means a size 16 band (around 88–92 cm underbust) and a D cup — moderate to full bust volume in Australian sizing.

How do I know if 16D is the right size for me?

Measure under your bust and across the fullest part of your bust using a tape measure. Match it against our size chart and fitting notes.

What’s a sister size to 16D?

14DD and 18C are your most common sister sizes — same cup volume, different band size, as noted in our size conversion chart.

Are wireless bras supportive enough for 16D?

Absolutely! Especially with brands like Elomi and Wacoal, wireless styles can offer great support and comfort, even for fuller bust lingerie.

Can I return a bra if it doesn’t fit?

Yes, just visit our Orders & Returns page. Our customer service team is here to help. You can also contact us directly or pop into one of our store locations for in-person assistance. We comply with customs declaration laws and manage all customs processing for international orders.

16D Bra Size Collection

Understanding the 16D Bra Size