ONCEWAS SIZE GUIDE
OnceWas garments range from relaxed silhouettes to more tailored fits, varying thoughtfully across styles and fabrications.
All garment measurements are provided on each product page under “Size & Fit,” to help you understand the specific measurements for each style. These measurements are taken of the garment lying flat. To ensure the best fit, we recommend using a tape measure to compare these measurements with a similar item from your wardrobe.
Please refer to the instructions below for guidance on accurately taking your own measurements.
BUST
Measure around the fullest part. Arms should be down by your side and slightly apart. Make sure the measuring tape is straight across the body.
TRUE WAIST
Measure around the natural waist line with the measuring tape straight across the body.
HIP
Measure around the fullest part of hip with the measuring tape straight across the body.
SIZE METRICS
| AU SIZE | AU6 | AU8 | AU10 | AU12 | AU14 | AU16 | AU18 | AU20 |
|---|---|---|---|---|---|---|---|---|
| GLOBAL | S | S | M | M | L | L | XL | XL |
| US | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| BUST (CM) | 80–85 | 85–90 | 90–95 | 95–100 | 100–105 | 105–110 | 110–115 | 115–120 |
| WAIST (CM) | 60–65 | 65–70 | 70–75 | 75–80 | 80–85 | 85–90 | 90–95 | 95–100 |
| HIP (CM) | 88–93 | 93–98 | 98–103 | 103–108 | 108–113 | 113–118 | 118–123 | 123–133 |
UNDER 5'4 SIZING
| UNDER 5'4 AU SIZE | AU6 | AU8 | AU10 | AU12 | AU14 | AU16 |
|---|---|---|---|---|---|---|
| GLOBAL | S | S | M | M | L | L |
| US | 2 | 4 | 6 | 8 | 10 | 12 |
| BUST (CM) | 80–85 | 85–90 | 90–95 | 95–100 | 100–105 | 105–110 |
| WAIST (CM) | 60–65 | 65–70 | 70–75 | 75–80 | 80–85 | 85–90 |
| HIP (CM) | 88–93 | 93–98 | 98–103 | 103–108 | 108–113 | 113–118 |
OW SIZING
Use the chart below to compare OnceWas sizing with the corresponding Australian sizing.
| AU SIZE | AU6 | AU8 | AU10 | AU12 | AU14 | AU16 | AU18 | AU20 |
|---|---|---|---|---|---|---|---|---|
| OW SIZE | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
NOT SURE WHICH SIZE TO CHOOSE?
We understand how difficult it can be to find the right fit when shopping online.
That’s why we’ve partnered with True to Form, a 3D body measurement and fit prediction tool designed to help you find your preferred fit before you order.
HOW IT WORKS
1. Simply click the ‘See how this fits’ button on any product page.
2. Enter your height, waist, bust and hip measurements.
3. Toggle between CM and inches to enter your measurements in your preferred unit.
SEE HOW IT REALLY FITS
See your recommended size and how each piece is predicted to fit on your body.
Toggle between sizes to compare the fit and choose what feels right for you, whether you prefer a more fitted or relaxed look.
LESS GUESSING. MORE CONFIDENCE.
We hope this helps take some of the uncertainty out of shopping online, making it easier to choose your size with confidence.
Go on, give it a try on our latest arrivals.
ECOMMERCE MODELS
UNDER 5'4 COLLECTION
Our Under 5'4 collection is thoughtfully designed for women under 5'4/162cm and under.
Available in sizes AU6 – AU16, our Under 5'4 collection is carefully adjusted to flatter petite heights without compromising on style, fit or comfort - with no tailoring required!
If you love our main range but find yourself needing to shorten hems, adjust sleeves or feeling overwhelmed by excess volume, the Under 5'4 collection is designed for you. The sizing remains consistent with our core range, with lengths reduced and volume carefully balanced in the design details, ensuring a more proportioned and effortless fit for shorter frames.
SHOP NEW ARRIVALS View all
If you require further fitting advice please email us at hello@oncewas.com.au or call our customer care during business hours and we can help you find the perfect fit.
